Funfetti Layer Cake.

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Buttery vanilla layer cake filled to the brim with rainbow sprinkles and finished off with sweet vanilla frosting with piped pink and blue border. No celebration is complete without a funfetti layer cake! Learn how to make it completely from scratch using this detailed homemade recipe.

Sally's Baking Addiction Recipe - Funfetti Layer Cake

ITSMA BIRTHDAY!

30!

Funfetti Layer Cake-3

In the spirit of this “no-more-excuses-you’re-seriously-a-grown-up-now-because-you’re-thirty” day, I’m sharing the most obnoxiously vibrant, playful recipe in all the land. I’ve shared a plethora of sprinkle-packed cakes on my blog before:

Each one is a little different in both preparation and ingredients, which just goes to show that there are many ways to enjoy this classic birthday masterpiece.

I made today’s cake for my birthday. Sidenote. Is that weird? I always make my own birthday cake? Do you do that too? #bakerproblems

For my 30th, I wanted a towering colorful cake with a soft, cakey interior that is perfectly moist without tasting greasy. Lots of vanilla and butter flavors in each crumb with a sweet vanilla frosting that can only be compared to big fluffy clouds. I realize these are high standards for a cake but it’s completely doable. Are you ready? Apron = on. Butter = softening. Sprinkles = obviously I just dropped those on the floor. Let’s do this!

This Funfetti Layer Cake recipe is on sallysbakingaddiction.com!

First thing’s first. Look at this cake. This is a huge three layer funfetti monster. Expect high amounts of each ingredient. To get that ultimate fluffy, cakey, soft crumb– we are going to cream the butter and sugar together in a mixer. Oh HEYYY look what I’m giving away right now. Let’s get the butter and sugar nice and creamy. To this, we’re going to add vanilla extract and eggs. Lots of vanilla for flavor. Make sure you’re using pure vanilla, none of that imitation stuff.

*About those egg whites. We are going to whip those until they are thick and foamy, then fold them into the batter last. Those voluminous, airy egg whites help create a fluffy cake with less likelihood of a dense crumb. I do something similar with my red velvet cake and love the results.

Make sure you’re using buttermilk. Not skim, 1%, 2%, whole milk, etc. Buttermilk is necessary not only to neutralize the baking soda, but to give the cake a luxuriously moist, rich flavor. If you don’t usually keep it on hand, please read my recipe notes about making your own DIY buttermilk at home.

One more thing about the batter– the sprinkles. I get questions about sprinkles on a daily basis. Confusing little gems, aren’t they? Do not use nonpareils (the little balls) in this cake. They will bleed their color as you fold them in, resulting in a less-than-appetizing color cake. Use rainbow sprinkles, also known as jimmies. I buy them in bulk from here. Or you can use confetti quins. Confetti quins are the little circle sprinkles I used as decor on top of today’s pictured cake. I love quins because (1) they never streak the batter, (2) are adorable, and (3) they’re my last name.

Win win win.

This Funfetti Layer Cake recipe is on sallysbakingaddiction.com!

We’re going to frost this rainbow delight with vanilla frosting. If chocolate is more your style, use the chocolate fudge frosting recipe in this post. (It’s enough for this size cake.)

It’s a basic vanilla frosting recipe that is creamy, smooth, and complimentary to the buttery funfetti cake underneath. I had a little frosting leftover, so I tinted it pink and blue to use as garnish for the top of the cake.

Reminds me of pretty pastel cotton candy. 🙂 You can certainly do this too, or you can tint the entire bowl of frosting any color you’d like.

The best confetti birthday cake recipe! Learn how to make this vanilla cake and vanilla buttercream from scratch! Recipe on sallysbakingaddiction.com

Yes or no: you are now blind from the amount of rainbow in this post.

Let’s party!

Follow me on Instagram and tag #sallysbakingaddiction so I can see all the SBA recipes you make. 

Funfetti Layer Cake

Buttery vanilla layer cake filled to the brim with rainbow sprinkles and finished off with sweet vanilla frosting with piped pink and blue border.

Ingredients:

Funfetti Cake

  • 3 and 3/4 cups (431g) sifted all-purpose flour1 (measured correctly)
  • 3/4 teaspoon baking powder
  • 3/4 teaspoon baking soda
  • 1 teaspoon salt
  • 1 and 1/2 cups (3 sticks; 345g) unsalted butter, softened to room temperature
  • 1 and 3/4 cups (350g) granulated sugar
  • 4 large eggs, room temperature
  • 2 large egg whites, room temperature
  • 3 teaspoons (15ml) pure vanilla extract
  • 1 and 1/2 cups (360ml) buttermilk, room temperature2
  • 3/4 cup (142g) rainbow sprinkles3

Vanilla Frosting4

  • 1 and 1/2 cups (3 sticks; 345g) unsalted butter, softened to room temperature
  • 6 cups (700g) sifted confectioners' sugar
  • 1/3 cup (80ml) heavy cream
  • 3 teaspoons (15ml) pure vanilla extract (or use clear imitation vanilla extract for stark white frosting)
  • 1/8 teaspoon salt
  • optional: additional sprinkles for garnish

Directions:

  1. Preheat oven to 350°F (177°C). Grease and lightly flour three 9-inch cake pans.5
  2. Make the cake: Whisk the sifted flour, baking powder, baking soda, and salt together in a large bowl. Set aside. Using a handheld or stand mixer fitted with a paddle attachment, beat the butter on high speed until smooth and creamy - about 1 minute. Add the sugar and beat on high speed for 5 full minutes until creamed together fairly well. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed. On medium-high speed, add 1 whole egg at a time, beating well after each addition until all 4 whole eggs are mixed in. Set the 2 egg whites aside for now. Beat in the vanilla extract. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed.
  3. With the mixer on low speed, add the dry ingredients in three additions alternating with the buttermilk, beginning and ending with the dry ingredients, and mixing each addition just until incorporated. Do not overmix this batter. The batter will be smooth, velvety, and slightly thick. Vigorously whisk or beat the 2 additional egg whites until thick, foamy, and soft peaks form- about 3 minutes. Gently fold into the batter. Finally, fold the sprinkles into the batter. Spoon/pour batter evenly into each cake pan.
  4. Bake for around 25 minutes or until the cakes are baked through. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, it is done. Allow cakes to cool completely in the pans set on a wire rack. The cakes must be completely cool before frosting and assembling.
  5. Make the frosting: In a large bowl using a hand-held mixer or stand mixer fitted with a whisk or paddle attachment, beat the butter on medium speed until creamy - about 2 minutes. Add confectioners' sugar, cream, vanilla extract, and salt with the mixer running on low. Increase to high speed and beat for 3 full minutes. Add more confectioners' sugar if frosting is too thin, more cream if frosting is too thick, or a pinch more of salt if frosting is way too sweet.
  6. Assemble and frost: First, using a large serrated knife, slice a thin layer off the tops of the cakes to create a flat surface. Discard (or crumble over ice cream!). Place 1 cake layer on your cake stand or serving plate. Evenly cover the top with frosting. Top with 2nd layer and evenly cover the top with frosting. Finish with the third cake layer and spread the remaining frosting all over the top and sides. I tinted extra frosting both pink (1 drop pink food coloring) and blue (1 drop blue coloring) and used a Wilton 1M tip to pipe it around the top edges. Decorate top of cake with sprinkles, if desired.
  7. Slice, serve, enjoy!

Make ahead tip: The cake layers can be baked, cooled, and covered tightly at room temperature overnight. Likewise, the frosting can be prepared then covered and refrigerated overnight. Assemble and frost the cake the next day when you are ready to serve. Frosted cake can be frozen up to 2 months. Thaw overnight in the refrigerator and bring to room temperature before serving. Honestly, it tastes much better fresh.

Recipe Notes:

  1. Make sure you sift the flour before measuring. Sifting is KEY. Otherwise, your cake layers could taste much too dense. You can also use cake flour instead of all-purpose flour. Use 4 cups (400g) sifted cake flour.
  2. Buttermilk is best for this cake recipe. If you do not keep it on hand, you can make a sour milk by adding 4 teaspoons of fresh lemon juice or white vinegar to a large liquid measuring cup. Then add enough regular room temperature milk (whole, skim, 1%, 2%) to make 1 and 1/2 cups total. Stir and let sit for 5 minutes. This soured milk can be used in the recipe.
  3. Avoid using sprinkles that will dye your batter. Steer clear from nonpareils, which are the little balls. I use rainbow jimmies and pastel colored quins. Always be gentle adding these to batter and do not overmix.
  4. Try my chocolate fudge frosting instead! Use this frosting recipe. It makes enough for this size cake.
  5. You can pour this batter evenly into four 9-inch cake pans to make a 4 layer cake instead of a 3 layer cake. The bake time is around 23-24 minutes. You can also use a cupcake pan to make about 3 dozen cupcakes, more or less. Fill halfway, bake for about 20 minutes.

Adapted from Piñata Cake

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© Sally’s Baking Addiction. All images & content are copyright protected. Please do not use my images without prior permission. If you want to republish this recipe, please re-write the recipe in your own words, or link back to this post for the recipe. Some of the links above are affiliate links, which pay me a small commission for my referral at no extra cost to you! Thank you for supporting Sally’s Baking Addiction.

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640 Comments

  1. I made this for my 5 year old nephew but used brown and orange jimmies instead – to match the tree stump house cake I was making for him.
    It turned out nicely – moist and sturdy – but not amazing; certainly not the disaster I ended up with by making the Easy Homemade Funfetti Cake recipe also on this site (I couldn’t leave a comment on that one to say it didn’t work out).
    I’d make it again if I need a dependable cake that’s easy to cut but there are definitely nicer cakes to make from this site.

  2. Hi Sally! I absolutely love this cake. It is a success every time I make it. But now I want to make it into a smash cake for the soon to be 1yr old nephew. What size pan and bake time do you suggest I use to adapt the recipe? Can it be easily adaptable to that? or do you suggest I make it in the 4 nine inch pans instead?

    Thank you!

    Christine

  3. Hi Sally, is it possible to make this in a sheet pan? Like a 9”x13” pan? If so, what is the oven temperature and for how long?

  4. Sally, can I make this a double layer rather than triple and if so, what adjustments do I need to make? Thank you so much!!

    Jill

  5. Hi Sally! Beautiful recipe! How can I adapt this to a sheet cake? (I know you already have another sheet cake recipe with different ingredients.)

    Thank you!
    Amanda

    1. Hi Amanda! This will be too much batter for a 9×13 or 12×17. You can use it, however, and only fill the pan halfway. Use the rest for cupcakes if you’d like.

      1. Thank you for the reply! Would it be enough batter for 2 sheet cakes or 2 9×13’s? I am planning my twins birthday party, so 2 would be perfect!

  6. Hi Sally, made this last night in a large 12 ‘ round cake pan.. used all the batter, but it didn’t rise a lot…. wondering if I should use it or make your white layer cake… and just add the confetti and sprinkles….
    love your site

  7. Sally, could I do a swiss meringue buttercream with this cake? Or would your rainbow chip frosting make enough to frost this cake (the three inner layers and the top and sides)? Thanks! It looks delicious!

  8. Hi Sally! A lot of your cake recipes say, “Using a handheld or stand mixer fitted with a paddle attachment, beat the butter on high speed until smooth and creamy” — The handheld mixer that I have does not have a paddle attachment, but I do have a whisk attachment. Can I use the whisk attachment for the handheld mixer to get the same results? Thank you! Love your recipes!

      1. Made this for my daughter’s birthday with white chocolate whipped cream frosting….the cake was toooooo yummmm…..thank you

  9. Hi, Good afternoon. I love confetti cake and I’ve tried sometimes. But the problem is that I cover the cake with creamcheese frosting or chocolate ganache and put the confetti on top of that and then its starts to bleed. Like I no longer have confetties just little color splashes.
    I’m from Portugal and I don’t know if how the coffettis are made is different. But anyhow, What can I do to prevent it?

    Thank you so much.
    Kiss

    1. What is the shape of the sprinkles you are using? If you are using the tiny little balls they will bleed more than the longer sprinkles. I’m not sure which is most common in Portugal but it might take just experimenting with different brands!

      1. I’ve tried 2 different brands of the tiny little balls. I’ll try the longer ones than. Thank you!

  10. Hi Sally
    I made this cake using cake flour in an aluminum Nordic Ware cake round lined with parchment paper, and the parchment paper was buttered (not excessively, just covered) and floured. The cake was done in the amount of time indicated in the recipe, and I then followed directions to let it cool completely in the pan, which was set on a cooling rack. It took 1 hour + to cool. When I turned the cake out the bottom was very mushy – a real “soggy bottom”. I wonder if this could be due to it being in the pan for so long, or the butter on the parchment? Any ideas? I am practicing for a birthday party this weekend – help!

    1. It could definitely be the butter on the bottom of the pan. I recommend just giving them a light spray with baking spray. The parchment paper will guarantee that they come out cleanly!

  11. Thanks for another great recipe, Sally!! I made this cake for my birthday (I too always bake my own birthday cakes!) and it was a huge hit. I am going to bake it again this weekend for my sister’s birthday but want to do a double layer 9×13 cake instead of a round cake. How would you recommend multiplying the ingredients for this conversion?
    Many thanks!

  12. Hi Sally! This is my boyfriend’s favorite cake recipe and begs me to make it for his birthday every year! He was just diagnosed to Celiacs, any tips on how to make this gluten free? Thank you!

    1. Unfortunately I don’t have any experience baking with gluten free flour. Other readers have had success substituting 1:1 gluten free flour. Let me know if you try it!

  13. Hi Sally, I am going to make this cake for my daughter’s birthday although I just realised I have 3 x 8” tins, not 9 inch. Would this be ok or should I try to source the 9 inch. Also, what would be the depth of the tin? Thanks for your assistance – your recipes look amazing!!!

    1. Hi Mel! 9 inch cake pans are recommended for best results, but you can use 8 inch instead. The cakes will be taller and require longer to bake through.

    2. Thanks for responding so quickly. I only just realised that you were using the deep dish tins and not the springform ones. I have just managed to source the 9 inch at a cost not a common size in Australia), so I am hoping the Chicago metallic 23cm cake pans are up to the job. I intend to make many more of your recipes so I thought I’d just go with that size. If I do a 4 tier cake with a piñata filling, will the frosting amount above be sufficient or could you please advise what quantity to use. I don’t mind if there’s leftovers as I’ll be able to use those. Thank you

  14. I made this cake and the batter was so thin it was hard to spread in the pan. What happened. I used the right amount of flour. Checked it twice.

  15. I’m a little confused by the flour. It says 3 3/4 cups is 431g but for cake flour it says 4cuos is 400g. Is that correct?

    1. Hi Bethia! All-purpose flour and cake flour weigh different amounts, these different amounts won’t make a large difference in the recipe if you swap one for the other.

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