Fluffernutter Cake.

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Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.com

What is a Fluffernutter, you ask?

A fluffernutter is a peanut butter + marshmallow creme sandwich. My older sister Sarah loved them when we were growing up!   The term fluffernutter can also describe desserts combining the tastes of peanut butter and marshmallow. And did you know? The Fluffernutter is the official sandwich of Massachusetts. They sure know what they’re doing up there!

I had leftover Fluff (marshmallow creme) from making my S’mores Cookie Bars (must make!). I brainstormed for a minute and decided to use the rest of the XXL jar for frosting. A quick marshmallow frosting to pair with a super-moist, dangerously good peanut butter cake.

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.com

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.com

The peanut butter cake is the same batter I use for my super-moist, super peanut buttery Peanut Butter Cupcakes.  This is my go-to peanut butter cupcake. It’s not made with white sugar – all brown sugar, baby.  The brown sugar and the eggs are why it is so darn moist!

I find that many peanut butter cupcakes and peanut butter cake recipes lack flavor.  They tend to have a dry texture and not nearly enough peanut butter taste.  My peanut butter cake + cupcake recipe is the complete opposite.  Kevin took one bite of this Fluffernutter Cake and the first thing he said?  “Super-moist.” 

It’s like biting into pure peanut butter.

#peanutbutterforlife

The best part?  The peanut butter cake is so easy to make!

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.com

Doesn’t the frosting look like a cloud? So good.

The marshmallow frosting took a couple tries to get perfect.  I’ve never made marshmallow frosting before, but was ready for the challenge!  The first batch, combining softened butter + Fluff + powdered sugar + vanilla,  had the consistency of glue.  Which totally ruined the taste for me.  I improvised and replaced the butter with cream cheese.  A sweet cream cheese marshmallow frosting that tastes nothing like cream cheese and everything like marshmallow.

Creamy marshmallow sitting atop a moist peanut butter cake. Fluffernutter at its finest.

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.comFluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make! sallysbakingaddiction.com

I spread the frosting on the cake with a knife. Nothing fancy. I opted out of frosting the sides of the cake because it is SO much easier to just frost the top.  Save yourself the time. Depending on how thick you slather the frosting onto the cake, you may have leftovers.

Leftover frosting is a wonderful accompaniment to graham crackers. Just sayin’.

Fluffernutter Cake-2

Reese’s Peanut Butter Cups are the decor of choice for the cake.  Because… why not?

Chop up 8 full size Reese’s Cups and sprinkle around the edges. Or all over – whatever you prefer. Decorating the cake is almost as fun as eating it. *Almost

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make!

Like banana bread and carrot cake, I find that peanut butter cake tastes best on day 2 after the flavors have settled and have gotten friendly with one another. It is also more moist on the 2nd day as well.  This didn’t stop us from digging right in after the photoshoot though!

It’s a one layer cake, which is much more practical for Kevin and I.  A couple leftover slices can easily be given away to friends and neighbors.  Double layer cakes and sheet cakes are my answer to birthdays and parties, but a simple cake like this can be made for any occasion.  If you’d like to make this a double layer cake, simply double all of the ingredients and bake in two 9-inch round pans.

So there you have it… a twist on the classic Fluffernutter sandwich we remember as kids. It’s simply the best peanut butter cake I’ve ever eaten.  I was blown away by its flavor and just how easy it was to make.  There is no excuse not to try this if you’re a Fluffernutter Lover. ;)

Fluffernutter Cake - a moist, rich peanut butter cake topped with a creamy marshmallow frosting and decorated with peanut butter cups. So easy to make!

Fluffernutter Cake.

Fluffernutter Cake.

Serves 10. Cake stays fresh (covered) at room temperature or in the refrigerator for 4 days. Frost immediately before serving.

Ingredients

    Cake
  • 1/2 cup (1 stick or 115 grams) unsalted butter, softened to room temperature
  • 3/4 cup (150 grams) dark brown sugar
  • 2 large eggs
  • 2/3 cup (170 grams) creamy peanut butter
  • 1 teaspoon vanilla extract
  • 1 and 1/4 cup (160 grams) all-purpose flour (are you measuring flour the correct way?)
  • 1 teaspoon baking powder
  • 1/4 teaspoon salt
  • 3 Tablespoons milk
  • Marshmallow Frosting
  • 7.5 oz (1 cup; 213 grams) container marshmallow creme (Fluff)
  • 8 oz (225 grams) cream cheese, softened to room temperature
  • 1/2 cup (60 grams) confectioners' sugar
  • 2 teaspoons vanilla extract
  • 1/2 teaspoon salt
  • 8 Reese's Peanut Butter Cups, chopped (optional)

Instructions

  1. Preheat oven to 350F degrees. Spray a 9x2 inch cake pan (or 9-inch springform pan) with nonstick spray. Set aside.
  2. Make the cake: Using a handheld or stand mixer, beat the butter and brown sugar together on medium speed in a large bowl until creamed. About 2-3 minutes. Add eggs, one at a time, and beat until combined. Scrape down the sides of the bowl as needed. Add the peanut butter and vanilla extract, beating for about 2 full minutes. Set aside.
  3. In a medium sized bowl, toss together the flour, baking powder, and salt. Slowly add the dry ingredients to the wet ingredients in 3 additions, stirring by hand after each addition. Batter will be thick. Add the milk and mix until just combined, do not overmix.
  4. Spoon the batter into the prepared cake pan. Bake for 20 minutes. Remove from the oven and loosely cover with aluminum foil. Bake for an additional 12-13 minutes or until a toothpick inserted in the center comes out clean. Allow cake to cool completely in the pan on a wire rack.
  5. Make the frosting: In a medium sized bowl, beat the cream cheese on medium-high speed until smooth and creamy. Turn off the mixer, add the marshmallow creme and beat on low speed for 1 minute. Slowly add the powdered sugar and vanilla extract and beat for 1 minute. Add the salt and continue to beat. Add more powdered sugar if you'd like the frosting to be thicker. Add more salt to cut that extra sweetness.
  6. Remove the cake from the pan by inverting it onto a large plate or cake stand. Frost the cake as desired. There will be leftover frosting depending how much frosting you use. Decorate with chopped Reese's Cups.

Notes

Recipe Source: Sallysbakingaddiction.com

© 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.

http://sallysbakingaddiction.com/2013/06/25/fluffernutter-cake/

 

If you love marshmallow, you have to try my S’mores Cookie Bars.

It’s like bringing the campfire inside. ;)

 S'more Cookie Bars-6

 

 

Today’s cake recipe is the same batter that I use for my Peanut Butter Cupcakes with Dark Chocolate Frosting.

Peanut Butter Cupcakes with Dark Chocolate Frosting-7

 

If you dig fluffernutters, try my Peanut Butter S’more Cookies! They’re wild.

S'More Peanut Butter Cookies-10

 

No-bake Double Decker Peanut Butter Chocolate Rice Krispie Treats have the best of everything – marshmallow, peanut butter, chocolate, and peanut butter cups.

Peanut butter chocolate rice krispie treats-3

 

The number one cake on my website right now is this Triple Chocolate Layer Cake. Everyone (and I mean everyone!) loves it.

Triple Chocolate Layer Cake-9

 

Have you ever had a fluffernutter sandwich?

 

 

 

   

116 Responses to “Fluffernutter Cake.”

  1. #
    61
    Erin @ The Spiffy Cookieposted July 2, 2013 at 12:00 pm

    Can it be my birthday again so I can have this?

    Reply

    • Sallyreplied on July 2nd, 2013 at 12:02 pm

      You don’t need to be the birthday girl to have this Erin!

      Reply

  2. #
    62
    Laura Dembowskiposted July 3, 2013 at 9:11 pm

    Though I never ate fluffernutter sandwiches, pb and marshmallow is one of my favorite flavor combos now. I actually had a homemade pb cookie with homemade marshmallow on top tonight. I also love pb cake and this looks awesome!

    Reply

    • Sallyreplied on July 4th, 2013 at 8:07 am

      homemade pb cookie + homemade marshmallow. that sounds like a dream!

      Reply

  3. #
    63
    Nutmeg Nannyposted July 10, 2013 at 12:36 pm

    Holy moly! This cake is fantastic, it looks pretty dangerous ;)

    Reply

  4. #
    64
    Rae Lovvornposted August 22, 2013 at 7:48 pm

    I think I may have found Mr. L’s birthday cake. Only I might put banana slices on top and make it an Elvis cake!

    Reply

    • Sallyreplied on August 22nd, 2013 at 8:50 pm

      mmm that’s a great combination, Rae!

      Reply

  5. #
    65
    Janeposted November 24, 2013 at 3:31 pm

    Hi Sally, this cake looks AMAZING! (fellow peanut butter lover) just wondering, would it be possible to leave out the marshmallow topping if you’re not a fan? or would it be a bit bland iwthout it? :)

    Reply

    • Sallyreplied on November 24th, 2013 at 3:50 pm

      Yes, you could leave the frosting off of the cake if you’d like. Maybe add 1/2 cup chocolate chips to the cake to add a little “something” to the peanut butter cake? Enjoy!

      Reply

  6. #
    66
    Laurynposted January 25, 2014 at 2:06 am

    Haii Sallly,

    I was just wondering if, if needed how much buttermilk should I add to the recipe?

    Reply

    • Sallyreplied on January 26th, 2014 at 7:25 am

      Sometimes I use 1/4 cup of buttermilk instead of the 3 Tbsp regular milk.

      Reply

  7. #
    67
    Elodieposted March 2, 2014 at 11:34 am

    Hi, i made this fluffernuttercake for my friend who is a big america-fan and it was such a success! thank u so much for the recipe and already converting the measurments! That was really helpfull. I was afraid that the frosting would be too sweet but it was just right!

    Thank u!

    Elodie from Belgium.

    Reply

  8. #
    68
    Savannaposted March 27, 2014 at 8:16 pm

    Hi don’t know if you have been asked this already, would it change the taste to use light brown sugar instead of the dark brown sugar?

    Reply

    • Sallyreplied on March 27th, 2014 at 8:37 pm

      light brown sugar would be just fine

      Reply

      • Savannareplied on March 27th, 2014 at 8:41 pm

        Thank you!

  9. #
    69
    Kathryn Cothernposted March 31, 2014 at 1:15 pm

    This looks SO good since I am a huge Fluffernutter sandwich kid from way back when!! I grew up in upstate NY so Fluff was THE marshmallow creme. I now live in central Texas and just introduced my three children to the real Fluff and they are hooked.

    I MUST make this dessert for someone…not sure yet, but someone! I am a new subscriber to your website and so far, I am so impressed by what I have seen.

    I will report back after making this delicious looking dessert.

    Thank you! :)

    Reply

    • Sallyreplied on March 31st, 2014 at 1:25 pm

      Thanks so much Kathryn! For both subscribing to my blog and for loving this cake recipe. Fluff is totally THE one and only marshmallow creme!

      Reply

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