Vanilla Sheet Cake with Whipped Buttercream Frosting

This vanilla sheet cake recipe uses the reverse creaming method, an easy technique that promises a uniquely soft and springy crumb with the most delicious buttery vanilla flavor. Use this cake recipe as a birthday sheet cake or for anytime you crave a simple classic dessert. Top the cake with whipped vanilla buttercream, a frosting made from butter, confectioners’ sugar, and heavy cream and whipped until extra fluffy.

vanilla sheet cake slice on a white plate

When it comes to classics like vanilla cake, the chapter never really ends. You see, there’s 3 layer vanilla cake, vanilla cupcakes, vanilla naked cake, one layer vanilla cake (aka strawberry shortcake cake!), vanilla 6 inch cake, confetti cake, and even a vanilla white cake hybrid. Each of these recipes use the same ingredients, only remixed and divided in different proportions.

But what about a simple vanilla sheet cake recipe?

That’s what we’re focusing on today. This is a pure and classic vanilla sheet cake with a soft, springy crumb and unbelievable sweet vanilla flavor. It’s the simple birthday cake you need and buttery taste you love. And let’s add a giant fluff ball on topโ€”otherwise known as whipped buttercream. This is dessert nostalgia at its finest!

One reader, Gabrielle, commented:I followed the recipe exactly and it came out amazing! I made it for someone’s birthday at work and it was a hit. It transported and served nicely right out of the dish. I would make this again! โ˜…โ˜…โ˜…โ˜…โ˜…

Another reader, Teri, commented:Just made this today! Delicious, light, fluffy, and rose beautifully! โ˜…โ˜…โ˜…โ˜…โ˜…

Another reader, Alycia, commented:Love, love, LOVE this cake! It has become my go-to birthday cake recipe, both for myself and for anyone I can talk into letting me make them a cake. It is fluffy with great crumb and flavor. I’ve made it into a 2-layer cake several times, following the baking instructions in the recipe Notes section. I’ve added sprinkles and mini chocolate chips, too! โ˜…โ˜…โ˜…โ˜…โ˜…

sliced vanilla sheet cake in a glass baking pan topped with sprinkles

Behind the Vanilla Sheet Cake Recipe

My vanilla cake recipe (the best I’ve ever had!) yields too much batter for a 9×13-inch quarter sheet cake, while the strawberry shortcake cake batter isn’t quite enough. My 2 layer vanilla/white cake hybrid is super light and fluffy and while it’s the perfect amount for a 9×13-inch quarter sheet pan, it doesn’t have the same buttery tight crumb as traditional vanilla cake. For today’s recipe, I took what I love about these cakes and combined them into the appropriate amount of batter to fit this classic size pan.

First, let’s walk through an in-depth tutorial of the mixing method. (Reverse creaming! You’re going to love it.) Though this is a very straightforward recipe, I encourage you to read through my tips before getting started.

slice of vanilla sheet cake on a pink plate with a fork

Reverse Creaming Method for Cake

Do you remember when I shared Tessaโ€™s Blackberry Lavender Cake? I just love her recipes! Prior to that cake, I had only used the reverse creaming method a handful of times. I loved her cakeโ€™s texture, so I replicated it with my strawberry shortcake cake not long after. We’re going to use the same method with today’s vanilla sheet cake recipe. Instead of starting with creaming butter and sugar together like traditional cake recipes, the reverse creaming method begins with the dry ingredients and ends with the eggs. This method produces a lighter and tighter crumb with more spring. The slices are tight like pound cake, but not dense in the slightest. Itโ€™s velvety soft and almost tastes creamy.

This method is so unique, but very easy.

Sift the dry ingredients, including the sugar, into a bowl. Sifting with a fine mesh strainer is imperative because it aerates the dry ingredients and leaves behind larger sugar crystals. Remember, we arenโ€™t creaming sugar and butter together where large sugar crystals are usually broken down. Next, mix in cubed room temperature butter, a little milk, and vanilla extract. In this step, the butter coats the flour. The coating of fat minimizes the flourโ€™s formation of gluten, which helps result in a finer cake crumb. You’ll taste the difference.

By the way, we coat flour with fat when we make biscuits and pie crust too. This practice helps produce an extra flaky (not dense) baked good.

2 images of dry ingredients in a sieve and cubes of butter with dry ingredients

Success Tip: Cube the butter when it’s cold. Smaller pieces of butter will warm to room temperature much quicker than a full stick of butter. Plus, it’s easy to cut cold butter into cubes as opposed to warmer room temperature butter.

After that, weโ€™ll add the rest of the liquids including the remaining milk, the sour cream, and eggs. The photo on the left (below) is our sheet cake batter. I promise it’s the creamiest batter you’ll ever work with. Avoid over-mixing it.

Which Cake Pan?

Use whichever 9×13-inch pan you have on hand. I usually lean towards a glass 9×13-inch pan simply because the cake looks extra beautiful serving right out of the dish. It’s what I prefer when making cookies and cream cake and yellow sheet cake, too. If using a metal baking pan, keep a close eye on the cake. Metal pans usually mean a quicker bake time, though my test recipes (in all different pans) each finished baking around the same time.

2 images of cake batter in a stand mixer bowl
vanilla cake batter in 9x13 inch glass cake pan

Vanilla Sheet Cake Ingredients

Whether you’re a beginner baker or pro, you’ll be happy to see that this vanilla sheet cake requires only a handful of super basic baking ingredients. Each one serves a purpose and for best results, I don’t recommend making substitutions.

  1. Cake Flour: Cake flour produces the softest cake. There’s simply no competition, but you can certainly make this cake flour substitute if needed. Cake flour is sold in the baking aisle with the other flours. You can use leftovers in any recipes using cake flour.
  2. Sugar & Salt: Sugar sweetens the cake and salt adds flavor.
  3. Baking Powder & Baking Soda: Remember the differences in baking powder vs baking soda and why it’s important to use both in some recipes?
  4. Butter: Room temperature butter is the workhorse behind this whole recipe, especially the reverse creaming method. It also adds flavor. I recommend using unsalted butter in this sheet cake recipe. If you’re interested, here’s a post I wrote on salted butter vs unsalted butter.
  5. Vanilla Extract: Vanilla extract adds flavor. Use an entire Tablespoon… trust me! And if you use homemade vanilla extract, even better. ๐Ÿ™‚
  6. Whole Milk: The cake’s crumb is extra rich and we have the whole milk to thank for it. Avoid lower fat or nonfat milks. Moist cakes need fat.
  7. Sour Cream: The moist maker! Thanks to sour cream, this cake melts in your mouth.
  8. Eggs: To obtain a fluffier cake, I usually add extra egg whites. However, this sheet cake didn’t need it. Maybe my ratios were off, but my few test recipes proved that this combination of ingredients brought together with the reverse creaming method doesn’t need extra whites. Simply use 3 full eggs. Actually, in one test recipe, I used 4 eggs with no sour cream. The cake tasted heavy, so I ultimately swapped 1 egg with sour cream. The cake is much lighter and moister.
Whipped vanilla buttercream in a glass bowl

Whipped Buttercream

Elevating this vanilla sheet cake is a lovely blanket of whipped buttercream. Use the same ingredients as my regular vanilla buttercream recipe, but add extra heavy cream and whip it for a few extra minutes. A little extra cream and a little extra whip turn this frosting into a buttercream/whipped cream duo. This is the same frosting we use to fill our cream-filled chocolate cupcakes. It’s mega creamy and fluffy, as if you borrowed a puffy cloud from the sky and slathered it on a cake. Talk about dreamy!

Couldn’t you get lost in these swirls?

vanilla sheet cake with sprinkles

If you want to go the extra mile, top this beauty with thick and fluffy Swiss meringue buttercream instead. For a less sweet option, try my whipped frosting. It’s a personal favorite! And for a pretty pink spin, strawberry buttercream frosting pairs wonderfully with vanilla cake.


Make an American Flag Cake!

Before we finish up, let’s chat about turning this vanilla sheet cake into a flag cake. Spread 2/3 of the frosting all over the cake, saving the remaining 1/3 for piping detail. Grab some fresh blueberries and halved strawberries and line them up to mimic the stars and stripes on an American flag. I used Ateco 32 piping tip for the piping between the “stars” and Ateco 844 piping tip for the piping between the “stripes.”

This would be an excellent choice for Memorial Day Weekend or the Fourth of July. See more Memorial Day Weekend recipes and 4th of July desserts.

vanilla sheet cake decorated like an American flag with berries and frosting
slice of vanilla sheet cake on a pink plate

Would love to know if you try this sheet cake!!

More Quarter Sheet Cake Recipes

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slice of vanilla sheet cake on a pink plate

Vanilla Sheet Cake with Whipped Buttercream Frosting

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.4 from 106 reviews
  • Author: Sally
  • Prep Time: 20 minutes
  • Cook Time: 30 minutes
  • Total Time: 4 hours
  • Yield: serves 12
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
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Description

This vanilla sheet cake recipe uses the reverse creaming method, an easy technique that promises a uniquely soft and springy crumb with the most delicious buttery vanilla flavor. Each ingredient serves a purpose and for best results, I don’t recommend making substitutions.


Ingredients

  • 3 cups (354g) cake flourย (spooned & leveled)
  • 1 and 1/2 cups (300g) granulated sugar
  • 1 teaspoon baking powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup (16 Tbsp; 226g) unsalted butter, cubed and softened to room temperature
  • 1 Tablespoon pure vanilla extract
  • 1 cup (240ml) whole milk, at room temperature and divided
  • 1/3 cupย (80g)ย sour cream, at room temperature
  • 3 large eggs, at room temperature

Whipped Vanilla Buttercream

  • 1 cup (16 Tbsp; 226g) unsalted butter, softened to room temperature
  • 4 and 1/2 cups (540g) confectionersโ€™ sugar
  • 1/3 cup (80ml)ย heavy cream (can be cold or room temperature)
  • 2 teaspoonsย pure vanilla extract
  • salt, to taste
  • optional: sprinkles for garnish


Instructions

  1. Make the cake: Preheat the oven to 350ยฐF (177ยฐC). Generously grease a 9×13-inch cake pan.
  2. Sift the cake flour, sugar, baking powder, baking soda, and salt in the bowl of a stand mixer. (Or if using a handheld mixer, any large mixing bowl.) With the paddle attachment, beat the ingredients together on low speed for a few seconds to gently combine. Add the butter, vanilla, and 1/2 cup of milk. Mix on medium speed until the dry ingredients are moistened, about 1 minute. Stop the mixer and scrape down the sides and up the bottom of the bowl. The mixture will resemble a thick dough.
  3. Whisk the remaining milk, the sour cream, and eggs together in a medium bowl. With the mixer running on medium speed, add the egg mixture in 3 additions, mixing for about 15 seconds after each addition. Stop the mixer and scrape down the sides and up the bottom of the bowl, then mix for about 15 more seconds until batter is completely combined. Avoid over-mixing. Some small lumps are OK.
  4. Pour and spread batter evenly into prepared pan. Bake for around 32-35 minutes or until the cake is baked through. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, itโ€™s done. Allow cake to cool completely in the pan set on a wire rack. The cake must be completely cool before frosting.
  5. Make the buttercream:ย With a handheld or stand mixer fitted with a paddle attachment, beat the butter on medium speed until creamy, about 2 minutes. Add confectionersโ€™ sugar, heavy cream, and vanilla extract. Beat on low speed for 30 seconds, then increase to medium-high speed and beat for 4 full minutes. Add up to 1/4 cup more confectionersโ€™ sugar if frosting is too thin or another Tablespoon of cream if frosting is too thick. Add a pinch of salt if frosting is too sweet. (I add 1/8 teaspoon salt.) Frosting should be extra fluffy.
  6. Spread frosting in a thick layer on cooled cake. I use and recommend an offset spatula. If desired, use a piping tip to pipe some frosting and/or garnish with sprinkles. Slice and serve.
  7. Cover leftover cakeย tightly and store in the refrigerator for up to 5 days.

Notes

  1. Make Ahead & Freezing Instructions: The cake can be baked, cooled, and covered tightly at room temperature overnight. Likewise, the frosting can be prepared then covered and refrigerated overnight. Let the refrigerated frosting sit at room temperature for 10 minutes, then beat with a mixer for 1 minute to bring it back to a spreadable consistency. Frosted cake or unfrosted cake can be frozen up to 2-3 months. Thaw overnight in the refrigerator and bring to room temperature before decorating/serving.
  2. Special Tools (affiliate links): 9×13-inch Cake Pan | Fine Mesh Sieve | Electric Mixer (Handheld or Stand) | Glass Mixing Bowl | Whisk | Cooling Rack | Offset Spatula
  3. Cupcakes:ย Fill cupcake liners 2/3 full. Bake at 350ยฐF (177ยฐC) for 19-21 minutes. Yields about 2 dozen. Or try myย vanilla cupcakes recipe.
  4. 2 Layer Cake: If desired, you can use this batter to make a 2 layer cake instead. Grease two 9-inch cake pans, line with parchment paper rounds, then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. Divide the batter evenly between the pans. Bake time will be a few minutes shorterโ€”keep a close eye on the cakes at 20 minutes and check for doneness with a toothpick.
  5. Cake Flour: For the best results, I strongly recommend cake flour. You can find it in the baking aisle and I haveย many more recipes using it. If you cannot get your hands on cake flour, you can make a DIY cake flour substitute.
  6. Why is everything at room temperature?ย Allย refrigerated items should beย at room temperature so the batter mixes together easily and evenly.ย Read here for moreย information.
  7. Sprinkle Cake: To make a sprinkle cake, fold about 2/3 cup (105g) of sprinkles into the cake batter. Avoid nonpareils (the little balls), which tend to bleed their color.
  8. Chocolate Frosting: If desired, swap the whipped vanilla buttercream with chocolate buttercream. The chocolate buttercream calls for beating for 1 minute, but for a fluffy whipped texture, whip for 3 full minutes.
sally mckenney headshot purple shirt.
About the Author

Sally McKenney

Sally McKenney is a baker, food photographer, and New York Times best-selling author. Her kitchen-tested recipes and step-by-step tutorials have given millions of readers the knowledge and confidence to bake from scratch. Sallyโ€™s work has been featured on TODAY, Good Morning America, Taste of Home, People, and more.

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Reader Comments and Reviews

  1. Priscilla aitken says:
    November 22, 2025

    Love this recipeโ€ฆ. This is the second time I used this recipe for a โ€œonesieโ€œ baby cake. The cake and frosting were perfect. Only problem is I had a hard time getting a blue coloring for the onesie.

    Reply
    1. Trina @ Sally's Baking says:
      November 22, 2025

      Gel food coloring is best for vivid colors!

      Reply
  2. Kim McKinley says:
    November 20, 2025

    Sally,
    I really need your help. I am a good baker but I don’t anymore because I am dealing with metastatic stage IV terminal breast cancer. I have a 12 year old son, and I wish he knew me before this (I’ve dealt with this most of his life). So, I don’t get to bake with him like he would like. It is really hard for me to stay on my feet for long.
    On Saturday, I need to make a LARGE sheet cake for his class project. Then his friends have to decorate it to depict their project about 16th century Spain. They don’t want me to do the layers (and cut it up). They want a really large sheet cake so they have plenty of room on the top to do their thing (draw a country, etc.).
    You have a vanilla sheet cake recipe, but it isn’t large enough for the Wilton metal sheet cake pan (I’ve never used yet) that is 15″ x 11.5. What recipes should I make twice to fill this in? I think you might say I have to mix two batters up separately. If I need to do that, the unfortunate thing is that the first batter would have to sit in the pan for awhile at room temperature. I understand that the volume would be 172.50. Thank you in advance for your input. With the price of food, I don’t want to mess this up. Thank you! Kim

    Reply
    1. Lexi @ Sally's Baking says:
      November 21, 2025

      Hi Kim! We’re happy to help. Yes, we would recommend making the batter twice and then combining it. It’s okay for the first batch to sit at room temperature while you make the second batchโ€”just cover the mixing bowl with a clean kitchen towel. Once the batter is combined, you can fill your pan about half way and use any leftover batter for a few cupcakes on the side. We’re unsure of the exact bake time, but keep a close eye on it and use a toothpick to test for doneness. We hope this helps and that the cake is a hit!

      Reply
  3. Nicole says:
    November 10, 2025

    Came out great! Even better was that I was able to make this without any kind of electric mixer. It was a lot of elbow grease but was worth it!

    Reply
  4. Sue says:
    November 1, 2025

    Could I substitute the sour cream for buttermilk please? Or would that change things terribly?

    Thank you

    Reply
    1. Michelle @ Sally's Baking says:
      November 1, 2025

      Hi Sue, if using buttermilk as a substitute, use it to replace the milk AND the sour cream. So, 1 and 1/3 cups total. Happy baking!

      Reply
  5. Elise says:
    October 30, 2025

    if i wanted to make this into a cookie butter cake can i fold in some biscoff spread? and would that alter the baking time at all?

    Reply
    1. Trina @ Sally's Baking says:
      October 30, 2025

      Hi Elise! It would take some testing to adapt this recipe to include cookie butter. It may be best to search for a cookie butter sheet cake recipe instead, or top this vanilla cake with a cookie butter frosting (cookie butter should work well in the place of peanut butter in our peanut butter frosting recipe, but we haven’t tested it ourselves).

      Reply
  6. Pei says:
    October 25, 2025

    Hello can use this recipe for 12×12 square pan and do I double up the amount for 30ppl serving?

    Reply
    1. Lexi @ Sally's Baking says:
      October 27, 2025

      Hi Pei, here’s everything you need to know about converting to different cake pan sizes.

      Reply
  7. Allison says:
    September 22, 2025

    Hi Sally! Do you think this cake would hold up as a numbered birthday cake? Thanks!

    Reply
    1. Lexi @ Sally's Baking says:
      September 22, 2025

      That should work just fine, Allison!

      Reply
  8. Susi says:
    September 6, 2025

    I didnโ€™t have cake flour so I made my own. While the cake is good, especially with this awesome frosting, I found the texture to be a tad coarse. Could this be the home/grown cake flour?

    Reply
    1. Michelle @ Sally's Baking says:
      September 6, 2025

      Hi Susi, Make sure your baking powder and baking soda are fresh too. Dense cakes can often be caused by over mixing the batter. This post on how to prevent dry and dense cakes will be a helpful resource to review. Thanks for giving this one a try!

      Reply
  9. Heather says:
    August 30, 2025

    I love your cake recipes! But this is the second buttercream recipe of yours Iโ€™ve made and it breaks every time. I sift the confectioners sugar and beat it as you described and ensure everything is room temp. Itโ€™s happened 4-5 times. Help!

    Reply
  10. Addie says:
    August 30, 2025

    Hello! this looks so delicious. I was curious on how much frosting this would make! I need a less sweet frosting to fill and coat a three layer, eight inch cake. I saw your actual less-sweet, whipped frosting, but I don’t have cream cheese, so I think I might have to use this one. Thank you guys so much!

    Reply
    1. Michelle @ Sally's Baking says:
      August 30, 2025

      Hi Addie, this frosting will yield about 3.5-4 cups.

      Reply
  11. Sylvia Burroughs says:
    August 22, 2025

    If I have cake batter left over can I put it in fridge ? If so how long?

    Reply
    1. Erin @ Sally's Baking says:
      August 23, 2025

      Hi Sylvia, we donโ€™t recommend that, as the leaveners are activated once the wet and dry ingredients are combined. We recommend baking as soon as possible after mixing up the batter.

      Reply
  12. Laura says:
    August 16, 2025

    Hi Sally I made this cake for a half Van half chocolate sheet cake for a friend. Iโ€™m a seasoned baker so I was wondering why overnight the cake shrunk quite a bit. Has that happened to you ? It looked great after baking but the next morning it shrunk a lot. More than a normal cooling.

    Reply
    1. Michelle @ Sally's Baking says:
      August 16, 2025

      Hi Laura, When cakes shrink, itโ€™s often because they are slightly underbaked. A few additional minutes in the oven should help for next time. Be sure that your baking powder and baking soda are also fresh for optimal rise. Hope this helps for next time!

      Reply
  13. Lucy Parkes says:
    August 6, 2025

    Hi, would it be possible to add white chocolate to the whipped buttercream? Or would that cause issues when whipping?

    Thanks!

    Reply
  14. Leo says:
    July 15, 2025

    Hello! I am using this recipe to make a number cake with stencils and want to make it tres leches flavored. would the three milks absorb into this cake well?

    Reply
    1. Lexi @ Sally's Baking says:
      July 15, 2025

      Hi Leo, we haven’t used this cake with a milk soak, but we can’t see why not! Let us know how it goes for you.

      Reply
  15. Elsa Rodriguez says:
    July 4, 2025

    Hello! My cake came out super dense. What did I do wrong?

    Reply
    1. Michelle @ Sally's Baking says:
      July 4, 2025

      Hi Elsa, Make sure you are using cake flour and your baking powder and baking soda are fresh. Dense cakes can often be caused by over mixing the batter. This post on how to prevent dry and dense cakes will be a helpful resource to review. Thanks for giving this one a try!

      Reply
    2. Amanda Major says:
      July 11, 2025

      If I want to double this recipe and cook inn a larger pan. Do I lower the baking temp to 325?

      Reply
  16. Kate says:
    July 4, 2025

    Could I use a 12×17 sheet pan for this recipe?

    Reply
  17. Jennifer says:
    July 1, 2025

    How would I double this if I need to make half a sheet cake?

    Reply
    1. Trina @ Sally's Baking says:
      July 1, 2025

      Hi Jennifer! Here is everything you need to know about converting recipes to different Cake Pan Sizes.

      Reply
  18. Elaine says:
    June 30, 2025

    This is the best vanilla cake Iโ€™ve ever had. Followed the recipe exactly as written

    Reply
  19. Rose says:
    June 28, 2025

    I love your cakes Sally! Iโ€™m hoping to try this one for my daughterโ€™s first birthday party in the weekend. I plan to make it twice separately and then layer it. As I want twice the qty. Will the cake be ruined if I freeze it (without icing) so I can make it in advance and thaw the day before and ice on the day?
    Previously with your chocolate cakes I have cooled them, wrapped in cling film and foil for them for freezing.

    Reply
    1. Erin @ Sally's Baking says:
      June 29, 2025

      Hi Rose, that will be fine! This cake freezes well. Thaw overnight in the refrigerator and bring to room temperature before decorating/serving. We have an entire post with our best tips to freeze cakes that might be helpful. Hope the cake is a hit for your daughter’s birthday!

      Reply
  20. Tresa Flanegin says:
    June 28, 2025

    Excited to make this cake for my son’s wedding, but before I start….. I live at 7300 ft., what all altitude adjustments should I make?

    Thank you!

    Reply
    1. Erin @ Sally's Baking says:
      June 28, 2025

      Hi Tresa, we wish we could help, but have no experience baking at high altitude. Some readers have found this chart helpful: https://www.kingarthurflour.com/learn/high-altitude-baking.html

      Reply
  21. Ally says:
    June 24, 2025

    Could I swap the sour cream for yogurt?

    Reply
    1. Lexi @ Sally's Baking says:
      June 24, 2025

      Hi Ally, absolutely!

      Reply
  22. Anna says:
    June 22, 2025

    If I wanted to make a marble cake, could I add cocoa powder to half the batter?

    Reply
    1. Beth @ Sally's Baking says:
      June 22, 2025

      Hi Anna, it’s a little more complicated than that, because cocoa powder is very bitter, and also drying, so we usually also add extra sugar and milk, too. See this recipe for zebra cake for guidance!

      Reply
  23. Judy says:
    June 18, 2025

    Would this buttercream recipe work if I’m putting an edible image on top of a 9×13 birthday cake? Thanks!

    Reply
    1. Lexi @ Sally's Baking says:
      June 18, 2025

      Hi Judy, we haven’t tested it, but that shouldn’t be an issue.

      Reply
  24. Margaret says:
    June 12, 2025

    I made two recipes of this cake and baked each in a 12 x 27 inch half sheet pan for 20 minutes. Each cake was frosted with a recipe of the whipped buttercream. I scored each cake into 24 pieces and placed a half glazed strawberry in the center of each piece. I followed the recipe exactly as written. Delicious and far easier than making several layer cakes!

    Reply
  25. Michelle Motyczka says:
    June 4, 2025

    Hi! Plan to make this tomorrow. Do you have any tips for keeping a more level surface while baking? Trying to avoid any doming on the top.

    Reply
    1. Lexi @ Sally's Baking says:
      June 4, 2025

      Hi Michelle, a little doming is normal and you can use a serrated knife or cake leveler to help even out the surface. We don’t personally use them, but some bakers swear by cake strips to help the cake bake with a more even top. We hope you enjoy the cake!

      Reply
  26. Willa says:
    June 3, 2025

    What measuring changes would I need to make if using a 12×18 in pan

    Reply
  27. Jessica says:
    May 30, 2025

    Do I double this recipe for a 12×18 pan? All of the half-sheet cake recipes I find are intended for jelly roll pans, and thus very THIN. I was hoping I could just double this quarter-sheet cake recipe and end up with a regular thickness half-sheet birthday cake. Would that work?

    Reply
    1. Sally @ Sally's Baking says:
      June 7, 2025

      Hi Jessica, this cake as written will fit into a 12ร—17-inch half sheet pan. It will be on the thinner side and the bake time will be shorter. However, if you want it thicker, I would make the batter twice (separately; do not double as the added volume will affect how the batter mixes) and then use however much to fill the half sheet pan halfway full. Use extra batter for a few cupcakes on the side.

      Reply
      1. Angie says:
        June 19, 2025

        Thank you for this info! Iโ€™m going to try this for our family gathering in July and make the two batters separate and a few cupcakes. What would the bake time look like?
        Thank you for all you do! Canโ€™t wait for your cookbook to arrive!

      2. Sally @ Sally's Baking says:
        June 19, 2025

        Hi again Angie! I’m unsure of the best bake time, so so sorry! You can use a toothpick to test for doneness. When it comes out clean, the cake(s) are done.

  28. Leigh says:
    May 20, 2025

    Really disappointed. This cake came out beautifully then shrunk to less than half the size. What did I do wrong?

    Reply
    1. Lexi @ Sally's Baking says:
      May 21, 2025

      Hi Leigh, how was the texture of the cake? When cakes shrink, it’s often because they are slightly underbaked. A few additional minutes in the oven should help for next time. Be sure that your baking powder and baking soda are also fresh for optimal rise. Hope this helps for next time!

      Reply