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Decadent chocolate peanut butter cake with creamy frosting

Irresistible Chocolate Peanut Butter Cake

A luscious chocolate cake combined with creamy peanut butter frosting and topped with crunchy Reese’s Peanut Butter Cups.
Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Course Cake, Dessert
Cuisine American
Servings 12 servings
Calories 450 kcal

Ingredients
  

For the Cake

  • 2 cups all-purpose flour For the cake base
  • 2 cups granulated sugar Brings sweetness and moisture
  • 3/4 cup unsweetened cocoa powder For chocolate flavor
  • 2 teaspoons baking powder Helps cake rise
  • 1 1/2 teaspoons baking soda Helps cake rise
  • 1 teaspoon salt Enhances overall flavor
  • 1 cup buttermilk For rich texture
  • 1/2 cup vegetable oil For moisture
  • 2 large eggs For structure
  • 2 teaspoons vanilla extract For depth of flavor
  • 1 cup boiling water Enhances chocolate flavor

For the Frosting

  • 1 cup creamy peanut butter For frosting
  • 1/2 cup unsalted butter, softened For smooth frosting
  • 3 cups powdered sugar For sweetness and texture
  • 1/4 cup heavy cream For smoothness
  • 1 teaspoon vanilla extract For flavor
  • 1 cup chopped mini Reese's Peanut Butter Cups For topping and crunch

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C).
  • Grease and flour two 9-inch round cake pans.
  • In a large mixing bowl, combine the dry ingredients: flour, sugar, cocoa powder, baking powder, baking soda, and salt. Whisk until well blended.
  • Add the wet ingredients (buttermilk, vegetable oil, eggs, and vanilla extract) to the dry mixture and stir until smooth.
  • Slowly pour in the boiling water, mixing until the batter is creamy and free of lumps.
  • Divide the batter evenly between the prepared cake pans.

Baking

  • Bake the cakes for about 30-35 minutes, or until a toothpick inserted into the center comes out clean.
  • Let the cakes cool in the pans for 10 minutes before transferring to a wire rack to cool completely.

Frosting

  • In a large mixing bowl, beat together the peanut butter and softened butter until smooth.
  • Gradually add the powdered sugar, followed by the heavy cream and vanilla extract. Mix until light and fluffy.

Assembly

  • Spread a layer of peanut butter frosting on top of one cake layer.
  • Place the second layer on top and frost the top and sides of the cake with the remaining peanut butter frosting.
  • Sprinkle the chopped mini Reese's Peanut Butter Cups over the top.

Notes

Consider adding a drizzle of chocolate ganache or mixing in crushed peanuts for added texture. Store the cake in an airtight container or cover tightly in plastic wrap.
Keyword Baking, chocolate cake, Dessert Recipe, Peanut Butter Cake