Annalise Sandberg

Chocolate Peanut Butter Sheet Cake

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This is a traditional chocolate sheet cake, but with a delicious peanut butter twist. Mighty Nut Chocolate powdered peanut butter in both the cake and frosting takes the cake from good to great. It’s any chocolate and peanut butter lover’s dream!

Sheet cakes make the perfect dessert to feed a crowd. If you have a smaller gathering, feel free to wrap any leftovers in plastic wrap and store in the freezer for up to 1 month.

Prep time: 30 minutes
Cook Time: 20 minutes
Total time: 40 minutes
Yield: 20 servings

Chocolate Peanut Butter Sheet Cake

Ingredients

Chocolate Peanut Butter Sheet Cake Ingredients - Mighty Nut Chocolate powdered peanut butter

For the cake
2 cups all-purpose flour
2 cups granulated sugar
1/2 cup Mighty Nut Chocolate powdered peanut butter
1 teaspoon baking powder
1/4 teaspoon salt
3/4 cup buttermilk
1 teaspoon vanilla extract
2 large eggs
1 cup unsalted butter
1/4 cup unsweetened cocoa powder
1 cup water

For the Frosting
1 3/4 cup unsalted butter
1/4 cup unsweetened cocoa powder
1/2 cup milk
1 teaspoon vanilla extract
4 cups powdered sugar
1/4 cup Mighty Nut Chocolate powdered peanut butter
1/4 teaspoon salt
1/2 cup chopped peanuts (optional)

Directions

1. Preheat oven to 350°F. Grease a 17 x 11 x 1-inch sheet pan with non-stick cooking spray. (Similarly sized sheet pans may also be used).

2. In a large bowl combine the flour, sugar, powdered peanut butter, baking soda and salt. In another bowl whisk together the buttermilk, vanilla and eggs.

Chocolate Peanut Butter Sheet Cake - combine the flour, sugar, powdered peanut butter, baking soda and salt

3. In a medium saucepan set over medium heat, melt the butter. Add the cocoa and water and bring to a boil, stirring frequently until mixture is smooth. Remove from heat and pour into the flour mixture, whisking until combined. Add the buttermilk mixture and whisk until smooth.

Chocolate Peanut Butter Sheet Cake - melt the butter

Chocolate Peanut Butter Sheet Cake - pour into the flour mixture

Chocolate Peanut Butter Sheet Cake - whisking until combined

4. Pour batter into the prepared sheet pan. Bake for approximately 20 minutes, or until the cake is springy to the touch.

Chocolate Peanut Butter Sheet Cake - Pour batter into the prepared sheet pan

5. While the cake is baking, prepare the frosting. In a medium saucepan set over medium heat, melt the butter. Add the cocoa and mix until smooth. Remove from heat. Whisk in the milk and vanilla extract, followed by the powdered sugar, powdered peanut butter and salt. Whisk until frosting is smooth. Stir in the chopped peanuts, if using.

Chocolate Peanut Butter Sheet Cake - Stir in the chopped peanuts

6. Immediately pour the frosting over the warm cake. Let sit for at least 30 minutes before serving.

Chocolate Peanut Butter Sheet Cake - Immediately pour the frosting over the warm cake

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Chocolate Peanut Butter Sheet Cake