Introduction to Peanut Butter Sheet Cake
Why Peanut Butter Sheet Cake is the Ultimate Comfort Dessert
If you're on the hunt for a dessert that wraps you in a hug of sweetness, look no further than peanut butter sheet cake. It’s a delightful treat that perfectly balances moisture, flavor, and a heavenly glaze, making it the ultimate comfort food for peanut butter enthusiasts.
This cake is not just about nostalgia; there’s something inherently satisfying about a slice of cake that evokes childhood memories of snacks and carefree days. When I first tried a peanut butter sheet cake, it reminded me of family gatherings filled with laughter, where the sweet aroma of baked goods filled the air. A simple yet elegant cake can easily be the star of your dessert table, making it a fantastic choice for both casual get-togethers and special occasions.
Did you know that peanut butter has been linked to heart health due to its high monounsaturated fat content? Despite its indulgent nature, this cake can provide some nutritional benefits, a perfect blend of pleasure and guilt-free indulgence. Whether served warm with a gooey peanut butter glaze or enjoyed the next day, this cake is sure to satisfy those sweet cravings.
So, let’s dive into making this easy and delicious peanut butter sheet cake that everyone will love!

Ingredients for Peanut Butter Sheet Cake
Creating a mouthwatering Peanut Butter Sheet Cake starts with the right blend of ingredients. Here’s a friendly breakdown of what you’ll need for the cake and the delightful frosting that elevates it to another level.
Essential Ingredients for the Cake
To whip up this deliciously moist cake, gather the following essentials:
- ¼ cup creamy peanut butter – This is the star of the show, lending that rich flavor we all love.
- 1 cup water – Hydration is key for that moist texture.
- ½ cup butter – For richness and a delectable crumb.
- 1 cup sugar and 1 cup brown sugar – A perfect sweet balance and added moisture.
- 2 cups flour – The foundation of your cake.
- 1 teaspoon salt and 1 teaspoon baking soda – Essential for flavor and leavening.
- 2 eggs – For binding everything together.
- ½ cup buttermilk – Adds tenderness; substitute with milk and lemon juice if needed.
- 1 teaspoon vanilla – A touch of warmth and sweetness.
Must-Have Ingredients for the Frosting
Now, let’s not forget the frosting—it really takes this cake to the next level! You’ll need:
- ¾ cup butter – A generous helping for a creamy texture.
- 6 Tablespoons buttermilk – To keep it smooth and spreadable.
- ½ cup peanut butter – Because a little extra never hurt anyone!
- 3 ½ cups powdered sugar – Sweetness and structure.
- 1 tablespoon vanilla – For that satisfying flavor kick.
With these ingredients in hand, you're just a few steps away from a dessert that's sure to impress. Curious about other baking tips? Check out The Kitchn for more helpful resources!
Step-by-Step Preparation of Peanut Butter Sheet Cake
Creating the ultimate peanut butter sheet cake is an easy and rewarding experience that will leave everyone talking about your baking skills. Let’s dive into the process together, step by step!
Gather and Prep Your Ingredients
Before you roll up your sleeves, make sure you have all your ingredients ready. Here’s what you’ll need for both the cake and frosting:
For the Cake:
- ¼ cup creamy peanut butter
- 1 cup water
- ½ cup butter
- 1 cup sugar
- 1 cup brown sugar
- 2 cups flour
- 1 teaspoon salt
- 1 teaspoon baking soda
- 2 eggs
- ½ cup buttermilk (you can easily make your own, see the note in the recipe!)
- 1 teaspoon vanilla extract
For the Frosting:
- ¾ cup butter
- 6 tablespoons buttermilk
- ½ cup peanut butter
- 3 ½ cups powdered sugar
- 1 tablespoon vanilla extract
Prepare the Cake Batter
Now that your ingredients are gathered, let’s create that velvety cake batter!
- In a medium saucepan, combine the peanut butter, water, and butter. Heat this mixture over medium heat until it comes to a boil, then remove it from the fire.
- In a separate bowl, whisk together the sugar, brown sugar, flour, salt, and baking soda. This helps to ensure that your dry ingredients are well-blended.
- Pour the warm peanut butter mixture into the dry ingredients and stir until just combined. Then, add in the eggs, buttermilk, and vanilla. Mix until the batter is smooth and creamy.
Bake the Sheet Cake to Perfection
Your batter is now ready, so let’s bring it to life in the oven!
- Preheat your oven to 375 degrees Fahrenheit, and prepare your 12x17 jelly roll pan by greasing it or lining it with parchment paper for easy removal.
- Pour the batter into the prepared pan, smoothing it out with a spatula.
- Bake for 13-15 minutes. Be sure to check towards the end so you don’t overbake – you want the cake to be moist and tender.
Make the Gooey Peanut Butter Frosting
While your cake is baking, it’s the perfect time to make that indulgent frosting.
- In a small saucepan, combine the butter, buttermilk, and peanut butter. Heat over medium until boiling and then remove from heat.
- Stir in the powdered sugar and vanilla until you have a smooth, luscious frosting that you might be tempted to eat straight from the bowl!
Frost the Cake While It's Warm
This step is crucial for that ultimate peanut butter sheet cake experience!
- As soon as your cake comes out of the oven, while it’s still warm, pour the gooey frosting over the top.
- Use a spatula to spread it evenly, letting the frosting melt and seep into the warm cake for that perfect combination of flavors.
There you have it! Your beautiful peanut butter sheet cake is ready to be enjoyed. Serve it warm, and watch as your friends and family go back for second helpings! Enjoy this delightful dessert with a tall glass of milk or a hot cup of coffee for extra indulgence.
If you’re looking for more sweet recipes, check out Food Network or Bon Appétit for inspiration!

Variations of Peanut Butter Sheet Cake
Chocolate Peanut Butter Sheet Cake
For chocolate lovers, this variation is a dream come true! Simply swirl in half a cup of cocoa powder into your batter to create a rich chocolate flavor that pairs perfectly with the creamy peanut butter. Top with a chocolate ganache for an extra indulgent touch. This chocolate peanut butter sheet cake combines the best of both worlds, making it a fantastic choice for celebrations or casual gatherings alike.
Peanut Butter and Banana Sheet Cake
If you’re looking to add a fruity twist, try a peanut butter and banana sheet cake. Mash two ripe bananas into the batter to infuse it with natural sweetness and moisture. The nutty flavor of peanut butter melds beautifully with bananas, creating a delightful dessert that will leave everyone asking for seconds. A sprinkle of chopped walnuts adds a satisfying crunch that enhances every bite.
These variations show just how versatile your classic peanut butter sheet cake can be! Whether you're in the mood for rich chocolate or fruity banana, you're sure to impress with these delicious alternatives. For some great tips on baking with bananas, check out this resource from the Banana Board.
Cooking Tips and Notes for Peanut Butter Sheet Cake
Importance of not overbaking
Overbaking your peanut butter sheet cake can quickly transform this delectable dessert from moist and fluffy to dry and crumbly. For the best results, keep a close eye on your cake as it nears the end of the baking time. Aim for a toothpick inserted in the center to come out clean, but remember that it will continue to cook slightly after removing it from the oven. This small tip can make a big difference in maintaining that perfect texture!
How to enhance flavor with variations
While the classic peanut butter sheet cake is already a crowd-pleaser, consider mixing things up! You can add chocolate chips for a delightful twist or brighten the flavor with a hint of cinnamon. Want to go nutty? Fold in some chopped peanuts or walnuts into the batter for added crunch. Experiment with different frostings too, like a cream cheese frosting for a creamy contrast to the peanut butter flavor. The options are endless! Explore these ideas on sites like Food Network and Serious Eats for further inspiration.

Serving Suggestions for Peanut Butter Sheet Cake
Creative ways to serve it
This peanut butter sheet cake is not just a dessert; it's an experience! For a delightful twist, try serving it warm with a scoop of vanilla ice cream on the side. You can also dress it up with crushed peanuts or chocolate shavings for added texture and flavor. For a fun gathering, cut the cake into smaller squares and top each piece with a dollop of whipped cream and a drizzle of caramel sauce.
Pairing with drinks and snacks
What pairs well with this indulgent cake? A steaming cup of coffee or a glass of milk is a classic choice that enhances the rich peanut butter flavor. If you’re in the mood for something different, consider serving it alongside a refreshing iced tea or a sparkling lemonade. For snacks, a platter of fresh fruit, like strawberries or bananas, complements the cake's sweetness beautifully.
By exploring these serving options, you're sure to impress your guests and satisfy those sweet cravings!
Time Breakdown for Peanut Butter Sheet Cake
When you’re ready to whip up this delicious peanut butter sheet cake, timing is everything. Here’s a simple breakdown to help you plan your baking adventure:
Preparation Time
Approximately 15 minutes is all you need to gather your ingredients and get everything prepped.
Cooking Time
In just 15 minutes, your cake will be baking beautifully in the oven, filling your kitchen with an irresistible aroma.
Total Time
In 30 minutes, you can go from start to finish, including baking and frosting. Perfect for a quick dessert fix!
What do you think? Ready to satisfy your peanut butter cravings? Let’s get baking!
Nutritional Facts for Peanut Butter Sheet Cake
Calories per serving
Each slice of this delightful peanut butter sheet cake comes in at approximately 250 calories. It’s an indulgent treat, but its rich flavors and textures make it worth every bite!
Protein content
Packed with peanut butter and eggs, this cake provides about 5 grams of protein per serving. It’s a delicious way to sneak in some extra protein while satisfying your sweet tooth.
Sugar content
With a combination of granulated and brown sugar, the cake carries around 15 grams of total sugar per serving. While it’s a sweet indulgence, balancing it with healthier meals that day can help keep your overall intake in check.
Enjoy baking, and be sure to savor every mouthful of this heavenly cake! For more insights on healthy snacking options, check out Healthline for expert advice.
FAQs about Peanut Butter Sheet Cake
Can I substitute ingredients for a healthier version?
Absolutely! If you're looking to make a healthier peanut butter sheet cake, you can swap out certain ingredients without sacrificing flavor. Consider using whole wheat flour instead of all-purpose flour for added fiber. You can also replace granulated and brown sugar with alternatives like coconut sugar or a sugar-free sweetener. For a lower fat option, use Greek yogurt in place of butter or cut the amount in half and add some applesauce. Experimenting with these substitutions can help you achieve a delightful yet nutritious twist on this classic cake.
How do I store leftover cake?
To keep your peanut butter sheet cake fresh for days, store any leftovers in an airtight container at room temperature for up to 3 days. If you need a longer storage option, wrap the cake tightly in plastic wrap and place it in the refrigerator for up to a week. For extended shelf life, consider freezing slices. Just wrap them individually and toss them in a freezer bag, where they’ll remain tasty for up to three months.
What other toppings can I use?
While the gooey peanut butter glaze is a star on its own, feel free to get creative! Chopped peanuts or other nuts add a delightful crunch. Drizzling chocolate or caramel sauce over the frosting can elevate the dessert to a whole new level. You might also consider adding fresh banana slices or even a sprinkle of sea salt to enhance the flavors. Whether it’s a simple upgrade or a gourmet finish, topping options are endless! For more ideas, check out this site for inspiration!
Conclusion on Peanut Butter Sheet Cake
Why you should try making it today!
There's nothing quite like a warm, gooey peanut butter sheet cake to awaken your taste buds and satisfy your cravings. This delightful dessert is not only easy to prepare but also perfect for gatherings, celebrations, or a cozy night in. So why wait? Gather your ingredients and create this moist, delicious cake today—it’s bound to become a favorite!
For more tips and yummy variations, check out this peanut butter frosting guide or explore different cake options at King Arthur Baking.

Peanut Butter Sheet Cake
Equipment
- Jelly roll pan
Ingredients
Cake
- ¼ cup creamy peanut butter
- 1 cup water
- ½ cup butter
- 1 cup sugar
- 1 cup brown sugar
- 2 cups flour
- 1 teaspoon salt
- 1 teaspoon baking soda
- 2 whole eggs
- ½ cup buttermilk see note for easy substitution
- 1 teaspoon vanilla
Frosting
- ¾ cup butter
- 6 Tablespoons buttermilk
- ½ cup peanut butter
- 3 ½ cups powdered sugar
- 1 Tablespoon vanilla
Instructions
Cake Instructions
- Preheat oven to 375 degrees.
- In a medium pot add the peanut butter, water, and butter and bring to a boil. Remove from heat.
- In a separate bowl, mix together the sugar, brown sugar, flour, salt, and baking soda with a fork. Mix together with the peanut butter mixture.
- Add the eggs, buttermilk, and vanilla to the bowl and mix well.
- Stir well and pour into greased or parchment lined cookie sheet pan with a little edge (12X17 jellyroll pan). Bake for 13-15 minutes at 375 degrees. Do not overbake!
Frosting Instructions
- In a small pot bring the butter, buttermilk, and peanut butter to a boil. Remove pan from the heat and add the powdered sugar and vanilla. Pour frosting over the warm cake.





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