Chocolate Peanut Butter Sheet Cake

Chocolate sheet cake doesn't get much better than this!  Moist, delicious chocolate cake is topped with a layers of creamy peanut butter, chocolate icing and then loads of peanut butter chips.  This cake recipe is perfect for anyone that loves an amazing chocolate and peanut butter dessert!


  • 2 c. granulated sugar
  • 2 c. all-purpose flour
  • 1/2 tsp. salt
  • 1/2 c. butter (1 stick)
  • 1/2 c. vegetable oil
  • 1/4 c. cocoa
  • 1 c. water
  • 1/2 c. buttermilk
  • 1 tsp. baking soda
  • 2 eggs
  • 1 tsp. vanilla
  • 1 c. cream peanut butter, heated to smooth
  • 1/4 c. milk
  • 1 c. sugar
  • 1/4 c. butter (1/2 stick)
  • 1/2 c. chocolate chips
  • 1 c. mini marshmallows (or 10 large marshmallows)
  • 1 c. peanut butter chips (for topping)


  1. Preheat oven to 350 degrees. Lightly spray a 9 x 13″ pan with non-stick baking spray. Set aside.
  2. In mixing bowl whisk together flour, sugar and salt. Set aside.
  3. In saucepan, add butter, oil, cocoa, and water and on medium heat bring to a low boil. Remove from heat. Pour hot liquid over dry ingredients and stir until combined. Dissolve baking soda in buttermilk, and add to mixture. Whisk in eggs and vanilla. Pour batter into the prepared pan and bake for 30-35 minutes. Once the cake comes out of the oven, heat peanut butter in microwave for 30 seconds so it becomes very creamy a spreadable. Pour over the warm cake, and spread completely over the top. Let cool completely.
  4. While the cake cools, make the chocolate frosting: In medium saucepan, heat milk, sugar, and butter stirring often. Promptly remove from heat after mixture comes to a low boil. Add in chocolate chips and marshmallows, and beat until both are melted and smooth. Let cool for about 10 minutes, while stirring often. Pour frosting over the top of the peanut butter layer, and top with the peanut butter chips. Let frosting set up completely before cutting.



source delightfulemade