Peanut Butter Sheet Cake with Peanut Butter Frosting

Stuffed biscuit bombs filled with seasoned ground beef, parmesan and cheddar cheese. Quick to make and perfect for parties.

Jovanie’s Kitchen

Updated on Mon, 14 Jul 2025 07:32:41 GMT
Peanut Butter Sheet Cake with Peanut Butter Frosting

Embrace the Comfort of Home with Peanut Butter Sheet Cake with Peanut Butter Frosting

Peanut Butter Sheet Cake with Peanut Butter Frosting is a nostalgic masterpiece that instantly transports me back to my grandmother’s cozy kitchen, where the rich aroma of freshly baked cake enveloped the air like a warm hug. I can still hear the sound of her wooden spoon rhythmically beating the batter, the gentle clinking of mixing bowls creating a melody that danced through the sunlit room. The moment I walked through the door, I was greeted by the sweet and nutty scent of peanut butter mingling with the soft notes of vanilla, a promise of the deliciousness to come. As the cake baked, the scent intensified, wrapping around me like a cherished memory. The texture of the cake itself was always a delightful surprise; soft, tender, and almost velvety, it crumbled just enough to melt in your mouth, inviting you to savor each bite. Topped with a generous layer of creamy peanut butter frosting, it was a dessert that brought everyone together, filling the room with laughter and chatter, as we eagerly anticipated that first slice.

Peanut Butter Sheet Cake with Peanut Butter Frosting

The first taste of this Peanut Butter Sheet Cake with Peanut Butter Frosting was a revelation, awakening my senses and igniting a flood of childhood memories. As the cake touched my lips, the sweetness enveloped my palate like a warm embrace, while the rich, nutty flavor of the peanut butter danced playfully with the frosting, creating a harmonious balance that was nothing short of divine. Each bite was a reminder of family gatherings, birthday celebrations, and those simple moments spent around the table, where love was served in generous portions alongside this beloved dessert. The creaminess of the frosting added a luxurious finish, leaving traces of peanut butter bliss that lingered long after the last crumb was devoured. It was more than just a cake; it was a slice of my childhood, a piece of home that I hold dear, and a recipe that I am excited to share with you.

Why You’ll Love It

  • This cake is a warm hug in dessert form, evoking cherished memories and feelings of home.
  • The rich aroma of peanut butter fills your kitchen, creating an irresistible atmosphere.
  • It features a moist, tender crumb that melts in your mouth, leaving you craving more.
  • The creamy peanut butter frosting adds a luscious finish that makes every bite unforgettable.
  • It’s an easy, crowd-pleasing dessert that’s perfect for gatherings or a sweet treat at home.

Ingredients You’ll Need

  • 2 cups all-purpose flour (for a gluten-free option, substitute with almond flour)
  • 2 cups granulated sugar (you can use coconut sugar for a healthier alternative)
  • 1 cup creamy peanut butter (smooth peanut butter works best for a velvety texture)
  • 1 cup buttermilk (or substitute with 1 cup of milk mixed with 1 tbsp of lemon juice)
  • 4 large eggs (room temperature eggs help with better incorporation)
  • 1 tsp vanilla extract (pure vanilla extract enhances the flavor)
  • 1 tsp baking powder (to create a light, fluffy cake)
  • 1 tsp baking soda (to give the cake a wonderful rise)
  • ½ tsp salt (to balance the sweetness)
  • ½ cup unsalted butter, softened (for a richer taste)
  • 2 cups powdered sugar (for the frosting, adjust to your sweetness preference)
  • ½ cup additional creamy peanut butter (for the frosting)
  • 2-4 tbsp milk (to achieve desired frosting consistency)

How to Make Peanut Butter Sheet Cake with Peanut Butter Frosting

Prepare the Batter

Begin your baking journey by preheating your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan, ensuring the cake will easily release once baked. In a large mixing bowl, combine the all-purpose flour, baking powder, baking soda, and salt. In a separate bowl, beat together the softened unsalted butter and granulated sugar until light and fluffy, a process that should take about 3-5 minutes. The mixture should become pale and airy, which is crucial for achieving a light cake. Next, add in the creamy peanut butter, mixing until fully incorporated. Beat in the eggs one at a time, followed by the vanilla extract, ensuring each is well blended before adding the next. Gradually mix in the dry ingredients and buttermilk, alternating between the two, starting and ending with the dry ingredients. This method helps maintain the cake’s tenderness. Pour the batter into the prepared baking pan, smoothing the top with a spatula.

Bake to Perfection

Place the filled baking pan in the preheated oven and bake for approximately 25-30 minutes, or until a toothpick inserted into the center comes out clean. The aroma that fills your kitchen during this time is nothing short of intoxicating, a blend of sweet and nutty scents that will leave your mouth watering. Once baked, remove the cake from the oven and allow it to cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely. This step is crucial, as frosting a warm cake can lead to a gooey mess rather than the beautiful layers you desire.

Whip Up the Frosting

While the cake cools, it’s time to prepare the luscious peanut butter frosting. In a mixing bowl, combine the additional creamy peanut butter with softened butter, beating them together until smooth and creamy. Gradually add the powdered sugar, mixing on low speed to avoid a sugary cloud in your kitchen. Once combined, add milk, one tablespoon at a time, until you reach the desired consistencysmooth and spreadable, yet thick enough to hold its shape. The key here is to taste as you go; you want the frosting to be sweet with a robust peanut butter flavor that perfectly complements the cake.

Assemble the Cake

Now that both the cake and frosting are ready, it’s time to bring them together. Carefully spread the peanut butter frosting over the cooled sheet cake using an offset spatula, creating an even layer that glistens in the light. Feel free to get creative here; if you have any crushed peanuts or chocolate chips, sprinkle them over the top for added texture and flavor. Allow the frosted cake to set for about 30 minutes, letting the flavors meld together beautifully. This waiting period is the hardest part, but it’s worth it for that first slice.

Slice and Serve

Once the frosting has set, grab a sharp knife and cut the cake into squares or rectangles, serving it on a beautiful platter. The first slice will reveal a moist, fluffy interior, while the frosting glistens invitingly on top. As you serve, consider pairing each slice with a glass of cold milk or a scoop of vanilla ice cream, an indulgent treat that beautifully complements the rich flavors of the Peanut Butter Sheet Cake with Peanut Butter Frosting. Enjoy every moment of sharing this delightful dessert with family and friends, as it is sure to be a hit at any gathering.

Peanut Butter Sheet Cake with Peanut Butter Frosting

Tips for Success

  • Ensure all your ingredients are at room temperature for better mixing and texture.
  • Don’t overmix the batter; stop mixing as soon as you see no dry flour to keep the cake light.
  • Let the cake cool completely before frosting to prevent the frosting from melting off.
  • For an extra rich flavor, use high-quality peanut butter without added sugars or oils.
  • Store leftover cake in an airtight container at room temperature for up to three days, or refrigerate for longer freshness.

Variations to Try

  • Incorporate chocolate chips into the batter for a delicious peanut butter chocolate combination.
  • Swirl in some jelly or jam before baking for a peanut butter and jelly twist.
  • Top the frosting with crushed pretzels for a sweet and salty crunch.
  • Use almond butter instead of peanut butter for a different yet equally delightful flavor.
  • Add a layer of banana slices between the cake and frosting for a fruity surprise.

For a delicious spin on this theme, give Irresistible German Chocolate Poke Cake and Strawberry Earthquake Cake a tryperfect additions to any dump cakes menu.

Frequently Asked Questions

→ Can I make this cake in advance?
Absolutely! This Peanut Butter Sheet Cake can be made a day in advance. Just keep it covered at room temperature until you are ready to frost and serve.

→ Can I freeze the cake?
Yes, you can freeze the unfrosted cake! Wrap it tightly in plastic wrap and aluminum foil, and it will last for up to three months in the freezer. Just thaw it at room temperature before frosting.

→ What can I use instead of buttermilk?
If you don’t have buttermilk on hand, you can easily make a substitute by mixing 1 cup of milk with 1 tbsp of lemon juice or vinegar. Let it sit for a few minutes before using.

Serving Suggestions

To serve your Peanut Butter Sheet Cake with Peanut Butter Frosting perfectly, consider garnishing with a sprinkle of crushed peanuts or a drizzle of chocolate sauce for an elegant touch. Pair it with a cold glass of milk or a scoop of vanilla ice cream to balance the rich flavors of the cake. For an added treat, serve alongside fresh berries to introduce a refreshing contrast to the sweetness.

Final Thoughts

As I reflect on the warmth and joy that my grandmother’s kitchen brought, I invite you to recreate those cherished moments with this Peanut Butter Sheet Cake with Peanut Butter Frosting. Each bite is a celebration of love, nostalgia, and the simple pleasures of home. I encourage you to try this recipe and share it with your loved ones, creating your own memories that will last a lifetime.

Chef’s Notes Pro Tips

  • For an extra decadent cake, consider adding a layer of chocolate ganache under the frosting.
  • Experiment with different types of nut butters to find your favorite flavor profile.
  • Use a serrated knife to cut the cake for clean, even slices.
  • For a fun twist, incorporate sprinkles into the frosting for a festive touch.
  • Ensure your peanut butter is well-stirred before measuring to achieve the right consistency.

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Peanut Butter Sheet Cake with Peanut Butter Frosting

Peanut Butter Sheet Cake with Peanut Butter Frosting

John
A rich and moist peanut butter sheet cake topped with creamy peanut butter frosting, perfect for any gathering.
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings 16

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
  • 1/2 cup creamy peanut butter
  • 2 large eggs
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla extract
  • For the frosting:
  • 1/2 cup unsalted butter, softened
  • 1/2 cup creamy peanut butter
  • 1/4 cup milk
  • 1 teaspoon vanilla extract
  • 3 cups powdered sugar

Instructions
 

  • Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking pan.
  • In a large bowl, whisk together the flour, sugar, baking soda, and salt.
  • In a medium saucepan, combine the water, butter, and peanut butter. Heat over medium heat until the butter and peanut butter are melted and the mixture is smooth.
  • Pour the peanut butter mixture into the dry ingredients and mix until well combined.
  • Add the eggs, buttermilk, and vanilla extract to the batter and mix until smooth.
  • Pour the batter into the prepared baking pan and spread it evenly.
  • Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
  • While the cake is baking, prepare the frosting. In a large bowl, beat the softened butter and peanut butter until smooth.
  • Add the milk and vanilla extract, and mix until combined.
  • Gradually add the powdered sugar, mixing until the frosting is smooth and creamy.
  • Once the cake has cooled slightly, spread the frosting evenly over the top.
  • Allow the frosting to set before slicing and serving.

Notes

  • Store the cake in an airtight container at room temperature for up to 3 days.
  • For a nuttier flavor, use chunky peanut butter in both the cake and frosting.
  • If you don't have buttermilk, you can make a substitute by adding 1 tablespoon of lemon juice or white vinegar to 1 cup of milk and letting it sit for 5 minutes.

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