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chocolate caked with salted peanut butter frosting - bethcakes.com

Chocolate Cake with Salted Peanut Butter Frosting

Prep Time 30 minutes
Cook Time 25 minutes
Cool time 1 hour
Total Time 1 hour 55 minutes


Brown Sugar Soak:

  • ½ cup dark brown sugar
  • ½ cup water

Chocolate Cake:

  • 1 cup dark brown sugar
  • 1 cup granulated sugar
  • 2 ¼ cups all-purpose flour
  • ¾ cup unsweetened cocoa powder
  • 1 tbsp baking powder
  • ½ tsp baking soda
  • ½ tsp salt
  • 2 large eggs
  • 1 ½ cup buttermilk
  • ¾ cup vegetable oil
  • 1 tsp vanilla extract
  • ¾ cup strongly brewed and cooled coffee

Peanut Butter Frosting:

  • 1 cup butter softened
  • ½ cup shortening
  • ¾ cup creamy peanut butter
  • ¼ cup whipping cream or milk
  • 1/2 tsp salt
  • 5 cups powdered sugar


  • flaky sea salt
  • mini peanut butter cups
  • Cocoa powder


To make the brown sugar soak:

  • Combine water and sugar in a small saucepan over medium heat. Stir until sugar dissolves. Remove from heat and let the mixture cool completely before using. Once cool, cover and store in the refrigerator until ready to use. Brown Sugar Soak can be made a day or two in advance.

To make the cake:

  • Preheat the oven to 350°F. Grease three 8-inch round cake pans with butter and dust with flour.
  • In a large bowl, whisk together sugar, flour, cocoa powder, baking powder, baking soda, and salt. Add eggs, buttermilk, oil, vanilla, and coffee. Mix with an electric mixer on medium speed for 1 to 2 minutes, or until all ingredients are incorporated. Divide batter evenly among the prepared pans.
  • Bake for 20 to 25 minutes, or until a wooden pick inserted in the center comes out clean. Let the cakes cool in the pan for 10 to 15 minutes, then transfer to a wire rack to cool completely.

To make the frosting:

  • In the bowl of a stand mixer, cream butter, shortening, and peanut butter on medium-high speed until smooth and creamy. Add cream, salt, and half of powdered sugar. Mix on low speed until mostly combined, and then high speed until completely combined. Repeat with the second half of the powdered sugar. Mix for 1 minute longer, until fluffy and all ingredients are well combined.


  • Once cool, level the cake layers with a cake saw or serrated knife. Drizzle brown sugar soak over each of the layers. Place one cake layer on a plate or cake stand. Top with a large dollop of frosting and spread evenly over the top. Repeat with the second and third layers. Spread frosting around the outside of the cake.
  • Decorate as you like! There should be enough frosting to include some piping or embellishments around the top. Sprinkle the top edges with flaky sea salt, mini peanut butter cups, and a light dusting of cocoa powder.
  • Store cake covered at room temperature.


All images and text ©Bethcakes.