Decadent Peanut Butter Cake for Every Occasion

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Author: Katrina Fears
Published:

Introduction

Peanut butter lovers, rejoice! This decadent peanut butter cake is a delightful combination of rich flavors and moist textures that will satisfy your sweet tooth. Perfect for birthdays, celebrations, or simply a treat for yourself, this cake brings the beloved taste of peanut butter into every bite.

The magic of this cake lies in its simplicity and the way it showcases the creamy, nutty flavor of peanut butter without overwhelming the palate. With a fluffy texture and a luscious frosting, it’s an inviting dessert that appeals to both children and adults alike. Let’s dive into the ingredients and preparation, ensuring you can whip this up in no time.

Ingredients

  • 2 cups all-purpose flour
  • 2 cups granulated sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup water
  • 1/2 cup unsalted butter, softened
  • 1/2 cup creamy peanut butter
  • 1/2 cup vegetable oil
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla extract
  • 1/2 cup unsalted butter (for frosting), softened
  • 1/2 cup creamy peanut butter (for frosting)
  • 3 1/2 cups powdered sugar
  • 1/3 cup milk
  • 1 teaspoon vanilla extract (for frosting)

Directions & Preparation

  1. Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans with butter or non-stick spray.
  2. In a large mixing bowl, combine the all-purpose flour, granulated sugar, baking soda, and salt. Mix well to ensure even distribution of the dry ingredients.
  3. In another bowl, mix together the softened unsalted butter, creamy peanut butter, vegetable oil, buttermilk, water, and vanilla extract until smooth and creamy.
  4. Gradually add the wet mixture to the dry ingredients, stirring until just combined. Be careful not to overmix, as this can lead to a denser cake.
  5. Divide the batter evenly between the prepared cake pans. Tap the pans gently on the counter to remove any air bubbles.
  6. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The cakes should be golden brown and spring back when lightly touched.
  7. Once baked, remove the cakes from the oven and allow them to cool in the pans for 10 minutes. Then, transfer them to a wire rack to cool completely.
  8. While the cakes are cooling, prepare the frosting. In a mixing bowl, beat together the softened unsalted butter and creamy peanut butter until smooth and fluffy.
  9. Gradually add the powdered sugar, alternating with the milk and vanilla extract, mixing until you reach your desired consistency. The frosting should be creamy but not too runny.
  10. Once the cakes are completely cool, place one layer on a serving plate and spread a generous amount of peanut butter frosting on top. Place the second layer on top and frost the top and sides of the cake.
  11. For an extra touch, you can drizzle some melted chocolate or sprinkle chopped peanuts on top before serving.
Peanut Butter Cake step photo

FAQs

What can I do if my cake is too dense?

If your cake turns out dense, it may be due to overmixing the batter. Ensure you mix just until combined.

Can I use natural peanut butter instead of creamy?

Yes, you can use natural peanut butter, but the texture might be slightly different, affecting the frosting consistency.

How can I make the cake more chocolatey?

To add a chocolaty flavor, consider mixing in cocoa powder into the batter or adding chocolate chips.

What toppings work well with peanut butter cake?

Chopped peanuts, chocolate ganache, or a drizzle of honey complement the flavors beautifully.

Can I bake this cake in a different pan size?

Yes, you can use a 9×13-inch pan, but adjust the baking time as it may require longer.

Why did my frosting turn out too thin?

If your frosting is too thin, try adding more powdered sugar until you achieve the desired thickness.

Can I use a different type of flour?

While all-purpose flour is recommended, you can experiment with cake flour for a lighter texture.

What if my cake has a dry texture?

Dry cake can result from overbaking or not enough moisture. Make sure to check for doneness early.

Conclusion

This peanut butter cake is more than just a dessert; it’s a celebration of flavors that will bring joy to any gathering. Its moist layers and creamy frosting create a delightful experience with every bite.

Whether you share it with friends or savor it alone, this cake is sure to become a favorite in your baking repertoire. Enjoy the process, and happy baking!

Recipe Card

Decadent Peanut Butter Cake for Every Occasion

Make Peanut Butter Cake with clear steps, pantry staples, and flexible swaps.

Ingredients
  

  • 2 cups all-purpose flour
  • 2 cups granulated sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup water
  • 1/2 cup unsalted butter softened
  • 1/2 cup creamy peanut butter
  • 1/2 cup vegetable oil
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla extract
  • 1/2 cup unsalted butter for frosting, softened
  • 1/2 cup creamy peanut butter for frosting
  • 3 1/2 cups powdered sugar
  • 1/3 cup milk
  • 1 teaspoon vanilla extract for frosting

Method
 

  1. Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans with butter or non-stick spray.
  2. In a large mixing bowl, combine the all-purpose flour, granulated sugar, baking soda, and salt. Mix well to ensure even distribution of the dry ingredients.
  3. In another bowl, mix together the softened unsalted butter, creamy peanut butter, vegetable oil, buttermilk, water, and vanilla extract until smooth and creamy.
  4. Gradually add the wet mixture to the dry ingredients, stirring until just combined. Be careful not to overmix, as this can lead to a denser cake.
  5. Divide the batter evenly between the prepared cake pans. Tap the pans gently on the counter to remove any air bubbles.
  6. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The cakes should be golden brown and spring back when lightly touched.
  7. Once baked, remove the cakes from the oven and allow them to cool in the pans for 10 minutes. Then, transfer them to a wire rack to cool completely.
  8. While the cakes are cooling, prepare the frosting. In a mixing bowl, beat together the softened unsalted butter and creamy peanut butter until smooth and fluffy.
  9. Gradually add the powdered sugar, alternating with the milk and vanilla extract, mixing until you reach your desired consistency. The frosting should be creamy but not too runny.
  10. Once the cakes are completely cool, place one layer on a serving plate and spread a generous amount of peanut butter frosting on top. Place the second layer on top and frost the top and sides of the cake.
  11. For an extra touch, you can drizzle some melted chocolate or sprinkle chopped peanuts on top before serving.

Notes

Additional serving suggestions: pair with a crisp salad, garlic bread, or roasted seasonal vegetables for balance.

For make-ahead, prep components separately and assemble just before heating to preserve texture.

Taste and adjust with acid (lemon/vinegar) and salt right at the end to wake up flavors.

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Welcome! I’m Katrina Fears,

I’m a passionate home cook who believes that every great recipe tells a story. What started as a simple love for cooking in a tiny kitchen has grown into a journey of exploring flavors, nourishing loved ones, and turning everyday meals into memorable moments.

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Simple & Delicious Cooking

New here? Join our free email series designed to help you get started in the kitchen. You’ll pick up essential baking tips and kitchen tricks to quickly boost your cooking confidence and skills!

Please enable JavaScript in your browser to complete this form.