Peanut Butter Sheet Cake with Peanut Butter Frosting

Why You’ll Love This Recipe

  • Simple ingredients: Uses pantry staples and a box of cake mix for a quick and easy bake.
  • Incredible flavor: Creamy peanut butter takes center stage in both the cake and frosting.
  • Perfect for gatherings: This sheet cake is ideal for feeding a crowd, making it great for parties and potlucks.
  • Customizable: Add chopped peanuts or chocolate chips for a fun twist.
  • Quick and easy: From start to finish, it’s ready in under an hour.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

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

Directions

  1. Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan.
  2. In a large mixing bowl, combine the 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 well blended.
  3. 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.
  4. While the cake is cooling, prepare the frosting. In a medium bowl, beat together the confectioners’ sugar, creamy peanut butter, softened butter, milk, and vanilla extract until smooth and fluffy. Add more milk, 1 tablespoon at a time, if the frosting is too thick.
  5. Once the cake has cooled, spread the peanut butter frosting evenly over the top. Slice and serve!

Servings and Timing

  • Servings: 12 slices
  • Prep Time: 15 minutes
  • Cooking Time: 30 minutes
  • Total Time: 45 minutes
  • Calories: 450 kcal per slice

Variations

  • Add a chocolate twist: Drizzle melted chocolate over the frosting or add 1/2 cup of mini chocolate chips to the cake batter.
  • Crunchy texture: Stir in 1/2 cup of chopped peanuts or crushed pretzels to the batter for extra crunch.
  • Layered cake: Split the batter between two 9-inch round pans to create a layered cake, perfect for special occasions.
  • Gluten-free option: Use a gluten-free yellow cake mix to make the recipe gluten-free.

Storage/Reheating

  • Storage: Store the cake in an airtight container at room temperature for up to 3 days or in the refrigerator for up to 5 days.
  • Freezing: Wrap individual slices tightly in plastic wrap, then place in a freezer-safe bag. Freeze for up to 3 months. Thaw at room temperature before serving.
  • Reheating: If you prefer warm cake, microwave individual slices for 10-15 seconds.

FAQs

1. Can I use chunky peanut butter instead of creamy?

Yes, but the texture of both the cake and frosting may be slightly different due to the peanut pieces.

2. Can I make this cake ahead of time?

Absolutely! You can bake the cake a day in advance and frost it just before serving.

3. How do I prevent the frosting from being too thick?

Add milk, one tablespoon at a time, until you reach the desired consistency.

4. Can I use a different type of cake mix?

Yes, white or chocolate cake mix would work, but it will slightly alter the flavor.

5. Can I double this recipe?

Yes, you can double the ingredients and bake in two 9×13-inch pans for larger gatherings.

6. Can I make cupcakes instead of a sheet cake?

Yes, this recipe makes approximately 24 cupcakes. Adjust the baking time to 18-20 minutes.

7. How do I know when the cake is fully baked?

Insert a toothpick into the center of the cake; if it comes out clean, the cake is done.

8. Can I add other toppings to the frosting?

Yes, crushed peanuts, chocolate chips, or a drizzle of caramel would be delicious.

9. What’s the best way to cut the cake?

Chill the frosted cake in the fridge for 15 minutes for cleaner cuts.

10. Can I make this dairy-free?

Substitute plant-based butter and milk for a dairy-free version.

Conclusion

This Peanut Butter Sheet Cake with Peanut Butter Frosting is a simple yet irresistible dessert that’s perfect for any occasion. With its rich peanut butter flavor and soft, moist texture, it’s sure to satisfy your sweet tooth. Whether you’re hosting a party or indulging in a slice for yourself, this cake is guaranteed to impress. Make it your own with fun variations and enjoy every bite!


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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

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