The Best Peanut Butter Buttercream Frosting for Cake

The Best Peanut Butter Buttercream Frosting for Cake

I LOVE peanut butter. I could honestly eat it with just about anything. And I am always looking to see what it would taste good with! So, you can imagine how happy I was when I created such a delicious and smooth peanut butter buttercream for my cakes. And, you guys, I can honestly say this is the best peanut butter buttercream frosting for cake! 

This post shares my infamous peanut butter buttercream frosting recipe along with some of my favorite cakes where I use the buttercream for them. I hope you find some favorites and enjoy baking and eating your new peanut butter cake creations!

the best peanut butter buttercream frosting for cake. www.cakebycourtney.com

The Best Peanut Butter Buttercream Frosting Recipe

I’m in love with my peanut butter buttercream frosting recipe. I think it is so light and silky smooth, which makes the perfect addition to a cake! If you love peanut butter too, I think you’ll really love this buttercream recipe! 

To make the peanut butter buttercream frosting, you’ll need:

  • 5 cups (625 g) powdered sugar, measured then sifted
  • 1 ½ cups (339 g) unsalted butter slightly chilled
  • 1 cup (250 g) peanut butter smooth
  • 1 Tbsp (13 g) vanilla extract
  • ¼ cup (57.75 g) heavy whipping cream
  • Pinch of salt

First, beat the butter and the peanut butter for about 3 to 5 minutes in a stand mixer with a paddle attachment. You want it to lighten in color and be smooth in texture. 

Next, gradually add the sifted powdered sugar, followed by the vanilla, salt, and cream while your mixer is on low speed. Stir all of the ingredients to combine.

Lastly, beat your mixture for an additional 5 minutes with your mixer on medium-high speed. Scrape the sides and bottom of the bowl a couple of times during the process to make sure it all gets mixed together well. The buttercream will become lighter in color and should take on a fluffy texture. 

Top 3 Peanut Butter Buttercream Frosted Cakes

As promised, here are three of my favorite peanut butter buttercream frosted cakes you’ll love! After making this list I think it’s time for me to go whip one of these up in the kitchen. The only problem is deciding which one to do first! 

Peanut Butter Buttercream Frosted Cake #1: Peanut Butter and Marshmallow Filled Fluffernutter Cake

fluffernutter cake recipe. www.cakebycourtney.com

My Fluffernutter Cake is made up of tender and fluffy white cake layers with banana cream filling and toasted marshmallow filling, covered in peanut butter buttercream. Did you grow up on fluffernutter sandwiches like me and my family? It’s a sandwich with peanut butter and marshmallow fluff! How could you go wrong? And my mom would always add a layer of banana in there too. So this cake is a representation of those cherished sandwiches I had as a kid!

Peanut Butter Buttercream Frosted Cake #2: Peanut Butter Dream Cake

peanut butter cake covered in the creamiest peanut butter buttercream. www.cakebycourtney.com

My Peanut Butter Dream Cake is the ultimate peanut butter lover’s cake. It has peanut butter cake layers, peanut butter marshmallow filling, and peanut butter buttercream frosting. (Yes, I love peanut butter that much.) I made this cake for one of my birthdays and it did not disappoint! I think if you love peanut butter or even just like it, this cake will knock your socks off! 

Peanut Butter Buttercream Frosted Cake #3: Peanut Butter Oreo Cake

peanut butter oreo cake recipe. www.cakebycourtney.com

Is it just me or do peanut butter and oreo really belong together? Dipping oreos in peanut butter has always been a thing in my house, so it was only a matter of time before I turned this sweet snack into a cake! This Peanut Butter Oreo Cake has SIX layers! I just wanted to make sure you got to taste the cake, cream filling, and buttercream in every bite. But you don’t have to do six. Check out my original post here to see how you can condense it down. 

The Best Peanut Butter Buttercream Frosting for Cake

Alright, which one of these cakes is getting you most excited to use the best peanut butter buttercream frosting for cake? I can’t wait to see which ones you love the most! And I’d love to know what you think of the peanut butter buttercream. Come let me know over on Instagram! You can follow me @cakebycourtney where I share all the tips and tricks for baking cakes and more!

https://cakebycourtney.com/cakedecorating101/
peanut butter cake covered in the creamiest peanut butter buttercream. www.cakebycourtney.com

Peanut Butter Buttercream Frosting

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My peanut butter buttercream frosting is silky smooth and light in color and texture ready to be added to any cake of your choice.
Cook Time 13 mins

Equipment

  • Stand mixer

Ingredients
 

  • 5 cups (625 g) powdered sugar, measured and then sifted
  • 1 1/2 cups (3 sticks) (339 g) unsalted butter, slightly cold
  • 1 cup (250 g) creamy peanut butter
  • 1 tablespoon (4.2 g) pure vanilla extract
  • 1/4 cup (57.75 g) heavy whipping cream
  • Pinch of coarse salt

*This buttercream recipe makes enough to fill and cover your cake. If you want to add additional piping, you’ll want to make an extra 1/2 batch.

    Instructions
     

    • In the bowl of electric mixer fitted with the paddle attachment, combine the butter and peanut butter. Beat on medium-high speed until smooth, about 45 seconds.
    • Add the powdered  sugar to the bowl and mix in, slowly at first until incorporated, then increasing the mixer speed to high. Blend in the vanilla extract, salt and heavy whipping cream, and continue to whip on high speed until very fluffy, about 4-5 minutes, scraping down the sides of the bowl as needed. 
    • Beat frosting by hand with a wooden spoon to get air bubbles out.

    Courtney Rich

    I’m a self-taught baker, obsessed with cake.

    I long ago ditched box mixes in pursuit of melt-in-your-mouth, to-die-for flavor combinations, fillings and textures. I believe cake must be decadent, life-changing and worthy of celebration! And I believe anyone should be able to bake that kind of cake – and I’m here to teach you just that!

    Get my free cake decorating guide
    Everything you need to know about decorating a cake like a pro!

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