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Peanut Butter Sheet Cake with Peanut Butter Frosting

Posted on November 11, 2025 by Admin

Oh yes! Peanut Butter Sheet Cake with Peanut Butter Frosting is a rich, moist, chocolatey cake with a creamy peanut butter frosting — a dream for peanut butter lovers. 🥜🍫

Here’s a classic recipe:


🍰 Peanut Butter Sheet Cake with Peanut Butter Frosting

🧺 Ingredients (9×13-inch pan)

Cake:

  • 1 cup unsalted butter
  • 1 cup water
  • ¼ cup unsweetened cocoa powder
  • 1 cup buttermilk
  • 2 large eggs
  • 2 ½ cups granulated sugar
  • 2 ½ cups all-purpose flour
  • 1 teaspoon baking soda
  • ½ teaspoon salt
  • 1 teaspoon vanilla extract

Frosting:

  • ½ cup unsalted butter, softened
  • ½ cup creamy peanut butter
  • 2–3 cups powdered sugar (adjust for consistency)
  • 2–3 tablespoons milk (or cream)
  • 1 teaspoon vanilla extract

🔪 Instructions

1. Preheat oven

  • Preheat to 350°F (175°C).
  • Grease a 9×13-inch baking pan.

2. Prepare the cake

  1. In a medium saucepan, combine butter, water, and cocoa powder. Heat until butter melts and mixture is smooth. Remove from heat.
  2. In a large bowl, mix sugar, flour, baking soda, and salt.
  3. Add cocoa mixture, buttermilk, eggs, and vanilla to dry ingredients. Mix until smooth.

3. Bake

  • Pour batter into prepared pan.
  • Bake 30–35 minutes, or until a toothpick inserted comes out clean.
  • Let cake cool completely before frosting.

4. Prepare the frosting

  1. Beat butter and peanut butter until creamy.
  2. Gradually add powdered sugar, alternating with milk, until smooth and spreadable.
  3. Stir in vanilla extract.

5. Frost the cake

  • Spread frosting evenly over cooled cake.
  • Optionally, sprinkle chopped peanuts on top for extra crunch.

🌟 Tips & Variations

  • Extra peanut butter punch: Swirl a few tablespoons of peanut butter into the cake batter before baking.
  • Chocolate drizzle: Melt chocolate and drizzle over the frosted cake for a decadent touch.
  • Storage: Store covered at room temperature for 2–3 days or refrigerate for up to a week.

I can also give you a quick one-bowl version that’s super easy and just as rich — perfect if you want minimal cleanup.

Do you want me to do that?

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