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Amazing Chocolate Peanut Butter Cake

A triple-tiered cake with moist chocolate layers, creamy peanut butter frosting, rich chocolate ganache, and mini Reese’s Peanut Butter Cups.

Ingredients

Scale
  • ⅓ cup natural unsweetened cocoa powder
  • 4 ounces bittersweet or semisweet chocolate, chopped
  • 1 cup boiling water
  • 1 cup buttermilk
  • ½ cup salted butter
  • 1 cup salted butter (for frosting)
  • 2 cups creamy peanut butter
  • 4 cups powdered sugar
  • 2 teaspoons vanilla extract
  • 3 Tablespoons heavy cream or milk
  • 6 ounces semisweet chocolate, chopped (or 1 cup chocolate chips, for ganache)
  • ½ cup heavy cream (for ganache)

Instructions

  1. Preheat oven to 350°F. Prepare three 9-inch round cake pans by lining bottoms with parchment paper and lightly spraying with cooking spray.
  2. Combine cocoa powder and finely chopped chocolate in a large bowl. Pour boiling water over and stir until chocolate melts. Let cool for 5 minutes.
  3. Add buttermilk to the chocolate mixture and whisk to combine.
  4. Cream ½ cup salted butter and gradually add sugar and eggs, then mix in the chocolate mixture and dry ingredients (not listed in search but implied).
  5. Divide batter evenly between cake pans and bake until a toothpick comes out clean (time not specified but typically 25-35 minutes). Let cool completely.
  6. For peanut butter frosting, beat 1 cup salted butter, peanut butter, powdered sugar, vanilla extract and heavy cream until smooth and creamy.
  7. For ganache, heat ½ cup heavy cream and pour over chopped chocolate, stir until smooth.
  8. Frost cake layers with peanut butter frosting, then cover with chocolate ganache, garnish with mini Reese's Peanut Butter Cups if desired.

Notes

Use room temperature ingredients for best results. The cake layers are very moist and rich, so ensure they are completely cool before frosting. You can substitute heavy cream with milk in frosting if needed.

Nutrition

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