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Coca-Cola Cake with Broiled Peanut Frosting

Coca-Cola Cake with Broiled Peanut Frosting consists of a moist chocolate sheet cake topped with a wonderfully sweet and salty peanut butter icing.

Course Dessert
Cuisine Southern
Keyword coca-cola cake
Prep Time 15 minutes
Cook Time 35 minutes
Servings 15
Calories 494kcal


  • 2 cups all-purpose flour
  • 2 cups granulated sugar
  • 1 cup salted butter, melted
  • 1/4 cup unsweetened cocoa powder
  • 1 cup Coke
  • 1/2 cup buttermilk
  • 2 large eggs, lightly beaten
  • 1 teaspoon baking soda
  • 1 teaspoon vanilla extract
  • 1 1/2 cups mini marshmallows


  • 6 tablespoons butter, softened
  • 1 cup packed dark brown sugar
  • 2/3 cup smooth peanut butter
  • 2 tablespoons milk
  • 1/2 cup chopped peanuts


  • Preheat oven to 350 degrees and spray a 9x13-inch baking pan with baking spray.
  • In a large bowl, whisk together flour and sugar.
  • In a medium bowl, whisk together melted butter, cocoa powder, and Coke. Pour into bowl with flour and stir until mixed well.
  • Add buttermilk, eggs, baking soda, and vanilla and mix well.
  • Stir in mini marshmallows and pour into prepared pan. Bake for 35 to 40 minutes. Let cake cool for 10 minutes before frosting.
  • To make frosting, beat butter, brown sugar, and peanut butter with an electric mixer until blended.
  • Beat in the milk and then stir in the peanuts. Spread frosting on cake.
  • Place cake under the broiler for a minute or two, or until the frosting just starts to get browned.


Using salted butter gives the cake and frosting a nice salty flavor to contrast the sweetness. If you don't like salty foods, try using unsalted butter.
Pepsi, Cheerwine, Dr. Pepper, or Root Beer can be used instead of Coke.
Broiling the frosting helps give it extra flavor, but this step can be skipped if you wish.


Calories: 494kcal