Peanut butter sheet cake with peanut butter frosting is a decadent treat that elevates the classic flavor of peanut butter into a delightful dessert experience. This recipe combines the rich and nutty essence of peanut butter with a moist and tender sheet cake, topped with a luscious peanut butter frosting that is sure to satisfy any peanut butter lover’s cravings. The cake itself is light and fluffy, creating the perfect canvas for the creamy and indulgent frosting that crowns it. Whether you’re celebrating a special occasion or simply craving a sweet and comforting treat, this peanut butter sheet cake is bound to impress and delight all who taste it.
Origin and Inspiration
The inspiration for this peanut butter sheet cake recipe comes from my childhood memories of baking with my grandmother. She used to whip up the most incredible peanut butter treats, and this recipe is a homage to her love for all things peanut butter. The idea of creating a sheet cake version came to me when I wanted to make a larger batch of peanut butter cake for a family gathering. The convenience of a sheet cake makes it perfect for feeding a crowd, and the addition of the peanut butter frosting takes it to a whole new level of deliciousness.
Unique Ingredients and Flavors
The key to the exceptional flavor of this peanut butter sheet cake lies in the quality of the ingredients used. Creamy peanut butter lends its distinct nuttiness and richness to both the cake and the frosting, creating a harmonious flavor profile that is both familiar and indulgent. The addition of buttermilk to the cake batter adds a subtle tanginess and helps keep the cake moist and tender. The frosting, made with butter, powdered sugar, and more peanut butter, is smooth, creamy, and packed with peanut butter goodness. It’s like spreading a cloud of peanut butter silk over each slice of cake.
Cooking Techniques and Tips
When making this peanut butter sheet cake, it’s essential to cream the butter and sugar thoroughly to incorporate air into the batter, resulting in a light and fluffy cake. Be sure not to overmix the batter once the dry ingredients are added, as this can lead to a dense and tough cake. To achieve a smooth and creamy frosting, make sure your butter is at room temperature before beating it with the peanut butter and powdered sugar. If you want to add a decorative touch, sprinkle some chopped peanuts or drizzle melted chocolate over the frosting before it sets.
Frequently Asked Questions
Can I make this recipe ahead of time?
Yes, you can make the cake a day in advance and store it in an airtight container at room temperature. The frosting can also be made ahead and refrigerated, but make sure to let it come to room temperature and re-whip it before frosting the cake.
Conclusion
Indulge in the nutty goodness of this peanut butter sheet cake with peanut butter frosting for a delightful treat that is sure to impress. Whether you’re a peanut butter aficionado or simply looking for a delicious dessert to share with loved ones, this recipe will not disappoint. So, roll up your sleeves, grab your mixing bowls, and get ready to experience the joy of baking and savoring a slice of this irresistible peanut butter delight. Don’t forget to share your baking adventures and feedback with us in the comments below!

Peanut Butter Sheet Cake with Peanut Butter Frosting
Description
Indulge in the irresistible combination of peanut butter in every bite with this luscious sheet cake and velvety frosting.
Ingredients
Peanut Butter Sheet Cake
Peanut Butter Frosting
Instructions
Peanut Butter Sheet Cake Instructions
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Prepare the Cake Batter
In a large mixing bowl, cream together butter, peanut butter, and sugars until light and fluffy. Add eggs one at a time, beating well after each addition. Mix in vanilla extract.For a richer flavor, use creamy peanut butter. Make sure the ingredients are at room temperature for a smoother batter. -
Mix Dry Ingredients
In a separate bowl, whisk together flour, baking powder, and salt. Gradually add the dry ingredients to the wet mixture, alternating with milk, until just combined.Avoid overmixing to keep the cake light and fluffy. -
Bake the Cake
Pour the batter into a greased 9x13-inch baking pan. Smooth the top with a spatula. Bake in a preheated oven at 350°F (175°C) for 25-30 minutes or until a toothpick inserted comes out clean.Allow the cake to cool completely before frosting.
Peanut Butter Frosting Instructions
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Make the Frosting
In a mixing bowl, beat together softened butter, creamy peanut butter, powdered sugar, and vanilla extract until smooth and creamy.Adjust the consistency by adding more powdered sugar for a stiffer frosting or a splash of milk for a softer texture. -
Frost the Cake
Spread the peanut butter frosting evenly over the cooled sheet cake. For a decorative touch, swirl the frosting with a spatula.Top with chopped peanuts or a drizzle of melted chocolate for extra flair. -
Serve and Enjoy
Slice the cake into squares and serve. Store any leftovers in an airtight container at room temperature for up to 3 days.This cake is perfect for potlucks, picnics, or any occasion that calls for a delicious peanut butter treat.
Note
- Ensure all ingredients are at room temperature for a smooth batter and frosting consistency.
- Use creamy peanut butter for a silky texture in both the cake and frosting.
- Sift the dry ingredients to avoid lumps in the batter.
- Be careful not to overmix the batter to maintain a tender crumb.
- Allow the cake to cool completely before frosting to prevent melting.
- For a decorative touch, sprinkle chopped peanuts or chocolate shavings on top.
- Store the cake covered at room temperature for up to 3 days or in the refrigerator for longer freshness.
- To make it dairy-free, substitute dairy-free milk and vegan butter in the frosting.