Easy Peanut Butter Cake & Peanut Butter Frosting

Mary Ann F


I made this in a pinch with ingredients I had sitting in the pantry. The cake is pretty darn tasty even without the frosting. My peanut butter-loving family says this is now their favorite dessert. And what doesn't go with peanut butter? You can drizzle chocolate on the frosting or place sliced bananas between a two layered cake. Your favorite jam would go great dolloped on top of cupcakes! Oh, the possibilities are endless. I hope you enjoy it.

Blue Ribbon Recipe

This cake is a must-make for any peanut butter lover. And it's so good it may convert non-peanut butter fans. You taste peanut butter in every layer of the cake and icing. A great moist and delicious cake! The Test Kitchen


★★★★★ 19 votes

10 Min
40 Min



  • 1 box
    yellow cake mix
  • 4
  • 1/2 c
    softened butter
  • 1 c
  • 1/2 c
    creamy peanut butter

  • 3 c
    confectioners' sugar
  • 1/2 c
    creamy peanut butter
  • 1/2 c
    softened butter
  • 2+ Tbsp
  • 1 tsp
    pure vanilla extract
  • tiny pinch

How to Make Easy Peanut Butter Cake & Peanut Butter Frosting


  1. Preheat oven to 325°F. Lightly grease 9 X 13 baking pan and set aside.
  2. Using an electric mixer, cream the butter and peanut butter until well incorporated. Add eggs, cake mix, and water and beat on medium for two minutes. Pour into greased baking dish and bake for 40 minutes or until toothpick comes out clean. Cool completely before frosting.
  3. Frosting: Cream the butter and peanut butter until well incorporated. Add confectioners' sugar, extract, salt, and 2 tablespoons of milk and continue to mix until the frosting is nice and fluffy. You may need an additional tablespoon (or more) of milk if the frosting is too thick.

Printable Recipe Card

About Easy Peanut Butter Cake & Peanut Butter Frosting

Course/Dish: Cakes
Main Ingredient: Flour
Regional Style: American
Other Tag: Quick & Easy

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