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Peanut Butter Sheet Cake with Peanut Butter Frosting


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  • Author: Isabella
  • Total Time: 45 minutes
  • Yield: 12 slices
  • Diet: Vegetarian

Description

Indulge in the ultimate peanut butter lover’s dessert with this Peanut Butter Sheet Cake topped with creamy peanut butter frosting. Perfect for birthdays, potlucks, or anytime you crave a sweet treat.

 


Ingredients

For the Cake:

  • 1 box yellow cake mix
  • 4 eggs
  • 1/2 cup softened butter
  • 1 cup water
  • 1/2 cup creamy peanut butter

For the Frosting:

  • 3 cups confectioners’ sugar
  • 1/2 cup creamy peanut butter
  • 1/2 cup softened butter
  • 2+ tablespoons milk (adjust for consistency)
  • 1 teaspoon pure vanilla extract

Instructions

  • Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan.
  • Mix Cake Batter: In a large bowl, combine yellow cake mix, eggs, softened butter, water, and creamy peanut butter. Beat on low speed for 30 seconds, then on medium speed for 2 minutes until smooth.
  • Bake: Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Let the cake cool completely in the pan.
  • Prepare Frosting: In a medium bowl, beat together confectioners’ sugar, peanut butter, softened butter, milk, and vanilla extract until smooth. Add milk as needed to reach the desired consistency.
  • Frost the Cake: Spread the frosting evenly over the cooled cake. Slice and serve!

Notes

  • For added texture, mix chopped peanuts or mini chocolate chips into the batter.
  • Use a gluten-free yellow cake mix for a gluten-free option.
  • Frost the cake right before serving for a freshly made look.
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American