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Peanut Butter Cake with Chocolate Buttercream Frosting is a delicious sheet cake that is great for any occasion. It’s full of crunchy peanut butter and topped with a delicious velvety chocolaty frosting.  

peanut butter cake with chocolate buttercream frosting

Enter the realm of decadent desserts where rich, creamy peanut butter meets luscious chocolate in a harmonious union of flavors.

Behold the Peanut Butter Cake with Chocolate Buttercream Frosting—a delectable masterpiece that promises to tantalize your taste buds and satisfy your sweet cravings.

In this blog post, we embark on a journey through the irresistible world of this indulgent dessert, exploring its velvety textures, nutty undertones, and chocolatey delights.

peanut butter cake with chocolate buttercream frosting

The Combination of Peanut Butter and Chocolate:

Before we delve into the recipe, let’s take a moment to appreciate the timeless pairing of peanut butter and chocolate.

It’s a match made in dessert heaven, with the creamy richness of peanut butter perfectly complementing the decadent sweetness of chocolate. Together, they create the perfect combination of flavors makes you coming back for more. 

peanut butter cake with chocolate buttercream frosting

Ingredients for Peanut Butter Cake:

  • package white cake mix
  • all purpose flour
  • granulated sugar
  • salt
  • water
  • sour cream
  • refined coconut oil or vegetable oil
  • egg whites
  • almond emulsion
  • vanilla bean paste
  • chunky peanut butter

peanut butter cake ingredients

Ingredients for Chocolate Buttercream Frosting:

  • unsalted butter, softened
  • powdered sugar
  • dark cocoa powder
  • heavy cream or milk
  • vanilla extract or vanilla bean paste
  • Pinch of salt

How To Make Peanut Butter Cake With Chocolate Buttercream Frosting

For the Peanut Butter Cake:

  • Preheat your oven to 325°F . Grease a sheet pan or grease and line with parchment paper for easy removal.

dry ingredients

  • Combine the cake mix, flour, sugar and salt in a mixing bowl.

wet ingredients

  • Combine the water, sour cream, oil, egg whites, almond emulsion, vanilla and peanut butter.
  • Add the wet ingredients to the dry ingredients and whisk to combine.

combining the wet and dry ingredients

  • Pour the cake batter into the sheet pan and tap lightly to remove any air bubbles.cake batter
  • Bake the cake for 25-30 minutes or until a toothpick comes out clean. The cake should not be brown at all.
  • Refrigerate the cake for at least 30 minutes.
  • Prepare the frosting by adding the butter into a stand mixer. Cream the butter slightly.
  • Add the powdered sugar, and cocoa powder and whip for 1-2 minutes. Then add the heavy cream or milk to thin the frosting.

chocolate buttercream frosting

  • Lastly add the vanilla extract and a pinch of salt and mix until the desired consistency.
  • Spread the frosting onto the sheet cake in an even layer. Then refrigerate until you are ready to serve.

Tips for Perfect Peanut Butter Cake with Chocolate Frosting:

Room Temperature Ingredients:

Ensure that the butter, eggs, and milk are at room temperature before starting to bake. This helps achieve a smooth and evenly textured cake batter.

Creamy Peanut Butter:

Use creamy peanut butter for the cake batter to ensure a uniform texture. Chunky peanut butter may affect the consistency of the cake.

Proper Mixing:

Mix the cake batter until just combined after adding the dry ingredients. Overmixing can result in a dense and tough cake.

Frosting Consistency:

Adjust the consistency of the chocolate buttercream frosting by adding more or less heavy cream as needed. It should be smooth and easy to spread.

Make-Ahead Option:

You can prepare the cake layers and frosting in advance. Store the unfrosted cake layers in an airtight container at room temperature or freeze them for longer storage. Refrigerate the frosting in a sealed container. Assemble the cake before serving.

Other Delicious Cake Recipes:

Try these other delicious cake recipes. 

The Best Poppyseed Bundt Cake

Brigadeiro Cake With Dulce De Leche

Best Carrot Cake with Cream Cheese Frosting

Lemon Cake With Raspberry Cream Cheese Frosting

Apple Cinnamon Cake

The Peanut Butter Cake with Chocolate Buttercream Frosting is a celebration of two beloved flavors—peanut butter and chocolate—coming together in perfect harmony.

With its moist and tender crumb, nutty undertones, and luscious chocolate frosting, this cake is sure to delight dessert lovers of all ages.

Whether enjoyed as a decadent treat for special occasions or as a comforting indulgence on any day, this irresistible cake promises to leave a lasting impression and satisfy even the most discerning sweet tooth.

Peanut Butter Cake With Chocolate Buttercream Frosting Recipe:

peanut butter cake with chocolate buttercream frosting
Yield: Serves 24

Peanut Butter Cake With Chocolate Buttercream Frosting

Prep Time: 10 minutes
Cook Time: 30 minutes
Additional Time: 30 minutes
Total Time: 1 hour 10 minutes

Moist, packed with flavor and so delicious!

Ingredients

For The Cake:

  • 1 (15.25 ounce) package white cake mix
  • 1 cup all purpose flour
  • 1 cup granulated sugar
  • 1/4 teaspoon salt
  • 1 1/3 cup water
  • 1 cup sour cream
  • 2 tablespoons refined coconut oil or vegetable oil
  • 4 egg whites
  • 1 teaspoon almond emulsion
  • 1 teaspoon vanilla bean paste
  • 1/2 cup chunky peanut butter

For The Chocolate Buttercream:

  • 1 cup unsalted butter, softened
  • 2 cups powdered sugar
  • 1/2 cup unsweetened dark cocoa powder
  • 2-3 tablespoons heavy cream or milk
  • 1 teaspoon vanilla extract
  • Pinch of salt


Instructions

    1. Preheat your oven to 325°F . Grease a sheet pan or grease and line with parchment paper for easy removal.
    2. Combine the cake mix, flour, sugar and salt in a mixing bowl.
    3. Combine the water, sour cream, oil, egg whites, almond emulsion, vanilla and peanut butter.
    4. Add the wet ingredients to the dry ingredients and whisk to combine.
    5. Pour the cake batter into the sheet pan and tap lightly to remove any air bubbles.
    6. Bake the cake for 25-30 minutes or until a toothpick comes out clean. The cake should not be brown at all.
    7. Refrigerate the cake for at least 30 minutes.
    8. Prepare the frosting by adding the butter into a stand mixer. Cream the butter slightly.
    9. Add the powdered sugar, and cocoa powder and whip for 1-2 minutes. Then add the heavy cream or milk to thin the frosting.
    10. Lastly add the vanilla extract and a pinch of salt and mix until the desired consistency.
    11. Spread the frosting onto the sheet cake in an even layer. Then refrigerate until you are ready to serve.

Nutrition Information:

Yield:

24

Serving Size:

1

Amount Per Serving: Calories: 254Total Fat: 15gSaturated Fat: 8gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 29mgSodium: 84mgCarbohydrates: 26gFiber: 1gSugar: 20gProtein: 4g

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