Serves 8 to 10


  • 2 cups flour
  • 2 cups sugar
  • 2 stick butter, melted
  • 2 tablespoons unsweetened cocoa
  • 1 cup Pepsi-Cola (with fizz)
  • 1/2 cup buttermilk
  • 2 eggs, beaten
  • 1 teaspoon baking soda
  • 1 teaspoon vanilla extract
  • 1 1/2 cups miniature marshmallows


  • 6 tablespoons butter
  • 1 cup dark brown sugar
  • 2/3 cup smooth peanut butter
  • 1/4 cup milk
  • 2/3 cup chopped peanuts


Cake: Preheat oven to 350 degrees Fahrenheit. Grease and flour a 9 x 13 x 2-inch sheet cake pan. Combine flour and sugar in a large bowl. Combine melted butter, cocoa, and Pepsi and pour over flour and sugar mixture. Stir until well-blended. Add buttermilk, beaten eggs, soda, and vanilla. Mix well. Stir in marshmallows. Pour into prepared pan. Bake 40 minutes. Remove cake from oven and frost while still barely warm.

Frosting: Cream butter, sugar, and peanut butter. Beat in milk. Fold in nuts. Spread over cake. Place frosted cake under broiler about 4 inches from heat source. Broil just a few seconds, or until topping starts to bubble. Watch constantly and be careful not to scorch frosting! Let cool at least 30 minutes before serving. 

Copyright 1984 Jane & Michael Stern.