Introduction to Peanut Butter Sheet Cake
Are you ready to indulge in a dessert that takes your love for all things peanut butter to new heights? Let me introduce you to the Peanut Butter Sheet Cake, a delightful creation that’s not just easy to make but equally impressive. Imagine a moist cake topped with a luscious, gooey peanut butter glaze that’ll have everyone at your next gathering begging for the recipe.
Why Peanut Butter Sheet Cake is a Game Changer for Dessert Lovers
For the peanut butter aficionados among us, this cake is a dream come true. Its simple preparation means you can whip it up for any occasion—from casual weeknight dinners to fancy potlucks. According to the American Peanut Council, peanut butter is a great source of protein and healthy fats, making this treat not just delicious but a bit more nutritious than your average dessert.
What truly sets the peanut butter sheet cake apart is how it captures that classic peanut butter flavor in every bite. The warm glaze melts into the cake, creating a harmony of taste and texture that's simply irresistible. Plus, you can serve it straight from the pan, making it perfect for gatherings where the focus is on fun, not fuss.
So, are you ready to transform your dessert experience? Trust me; this peanut butter sheet cake is about to become your new favorite.

Ingredients for Peanut Butter Sheet Cake
Essential Ingredients for the Cake
When you dive into making this delicious peanut butter sheet cake, you'll need a few essential ingredients to ensure that it turns out perfectly moist and flavorful. Here’s what you should gather:
- Creamy Peanut Butter: ¼ cup for that rich, nutty flavor.
- Water: 1 cup, which helps keep the cake moist.
- Butter: ½ cup, for a tender crumb.
- Sugar: 1 cup white sugar and 1 cup brown sugar for the right sweetness and depth.
- Flour: 2 cups all-purpose flour acts as the backbone of your cake.
- Salt & Baking Soda: 1 teaspoon of each; they balance flavor and help with rising.
- Eggs: 2 large eggs for stability.
- Buttermilk: ½ cup to add moisture and a slight tang.
- Vanilla Extract: 1 teaspoon for that warm, comforting aroma.
What You'll Need for the Frosting
Now, let's talk about that irresistible frosting that makes this peanut butter sheet cake truly special. You’ll need:
- Butter: ¾ cup, melted and integral for richness.
- Buttermilk: 6 tablespoons, which adds creaminess to the frosting.
- Peanut Butter: ½ cup for a deliciously nutty finish.
- Powdered Sugar: 3 ½ cups to sweeten and thicken the frosting to perfection.
- Vanilla Extract: 1 tablespoon to elevate the flavor profile.
With these ingredients in your pantry, you'll be well on your way to delighting your taste buds and those of your friends and family! For helpful tips on selecting and using quality ingredients, feel free to check out this article.
Preparing Peanut Butter Sheet Cake
Creating the perfect peanut butter sheet cake is a delightful experience that combines simplicity with rich flavor. Follow these steps to wow your friends and family with this easy yet scrumptious dessert!
Gather Your Ingredients and Tools
Before diving into this culinary adventure, it’s essential to gather all your ingredients and tools to streamline the process. Here’s what you’ll need:
Ingredients:
- Creamy peanut butter
- Water
- Butter (unsalted)
- Granulated sugar
- Brown sugar
- All-purpose flour
- Salt
- Baking soda
- Eggs
- Buttermilk (or homemade substitution)
- Vanilla extract
For the frosting:
- Butter (unsalted)
- Buttermilk
- Peanut butter
- Powdered sugar
- Vanilla extract
Tools:
- Medium pot
- Separate mixing bowls
- Whisk or electric mixer
- 12x17 jelly roll pan
- Parchment paper (optional for easy cleanup)
Prepare the Cake Batter
Once everything is ready, start creating the cake batter! In a medium pot, combine ¼ cup of creamy peanut butter, 1 cup of water, and ½ cup of butter. Gently heat this mixture until it reaches a boil, then remove it from the heat.
In a separate mixing bowl, whisk together 1 cup of granulated sugar, 1 cup of brown sugar, 2 cups of flour, 1 teaspoon of salt, and 1 teaspoon of baking soda. Gradually mix in the warm peanut butter mixture, followed by adding 2 eggs, ½ cup of buttermilk, and 1 teaspoon of vanilla extract. Stir everything well until you achieve a smooth consistency.
Bake the Cake to Perfection
Preheat your oven to 375°F (190°C). Grease your jelly roll pan or line it with parchment paper. Pour the batter into the prepared pan and spread it evenly. Bake for about 13-15 minutes, monitoring closely. You want the peanut butter sheet cake to be tender and spring back when touched. Remember, overbaking can lead to a dry cake!
Create the Delicious Peanut Butter Frosting
While your cake is baking, it’s time to prepare the frosting. In a small pot, combine ¾ cup of butter, 6 tablespoons of buttermilk, and ½ cup of peanut butter. Heat this mixture until it’s boiling, then remove it from the stove. Slowly stir in 3 ½ cups of powdered sugar and 1 tablespoon of vanilla. The frosting should be creamy and luscious.
Glaze the Cake While It’s Warm
Once the cake is baked and slightly cooled, pour the warm peanut butter frosting over the top. This step is crucial because the warmth of the cake helps the frosting to seep into every nook and cranny, creating a moist and flavorful dessert. Allow the cake to set for a few minutes before slicing.
By following these steps, you’ll create a mouthwatering peanut butter sheet cake that’s sure to impress at any gathering. Enjoy every delicious bite! For more tips on baking and ingredient substitutions, check out resources like King Arthur Baking for expert advice.

Variations on Peanut Butter Sheet Cake
When you’re looking to take your peanut butter sheet cake to the next level, there are plenty of delicious variations to consider!
Add chocolate chips for an indulgent twist
For those who can’t resist the allure of chocolate, toss in a cup of chocolate chips into the batter. The rich, creamy chocolate melds perfectly with the peanut butter flavor, creating a decadent treat that everyone will love.
Try adding banana for a unique flavor
If you’re feeling adventurous, why not mash a ripe banana into the batter? This not only adds natural sweetness but also a delightful moistness to your sheet cake. The combination of banana and peanut butter is a classic, and it’s sure to impress your guests.
Experimenting with these twists can elevate your dessert, making it truly memorable. For more inspiration, check out this article on different variations of cake recipes. Happy baking!
Cooking tips and notes for Peanut Butter Sheet Cake
The secret to a moist cake
To achieve a deliciously moist peanut butter sheet cake, don't skip the buttermilk! Its acidity adds tenderness and flavor. If you’re short on time, just mix a tablespoon of lemon juice or vinegar with milk to create a quick substitute. Additionally, remember to check the cake a minute or two before the suggested baking time; each oven is unique, and you want to avoid overbaking.
Common mistakes to avoid
When making this cake, it’s easy to get carried away. One common mistake is not properly measuring ingredients—use a kitchen scale or measuring cups for precision. Also, be mindful not to rush the mixing process; ensure your batter is well combined for the ideal texture. Finally, pour the gooey peanut butter glaze over a warm cake to maximize flavor absorption. Trust us, your taste buds will thank you!

Serving suggestions for Peanut Butter Sheet Cake
Ideal pairings with beverages
When indulging in the rich flavors of peanut butter sheet cake, it’s essential to consider what beverages would elevate this delightful treat. A tall glass of cold milk is a classic choice, balancing the creamy sweetness of the cake beautifully. For a refreshing twist, try pairing it with iced coffee or a chilled herbal tea, such as hibiscus or chamomile. These options enhance the cake’s flavors without overpowering them, creating a delightful dessert experience.
Presentation tips for serving guests
Make your peanut butter sheet cake look as good as it tastes! Start by cutting the cake into neat squares and placing them on a decorative platter. Dusting some powdered sugar on top will add a touch of elegance. Consider serving with a dollop of whipped cream or a scoop of vanilla ice cream on the side – it adds contrast and creaminess that pairs wonderfully with the rich peanut butter glaze. Decorate with a few chocolate shavings or crushed peanuts for that extra wow factor! To learn more about presentation tips, check out this handy guide. These simple touches will impress your guests and make your dessert the star of the show.
Time Breakdown for Peanut Butter Sheet Cake
Preparation Time
The prep time for this peanut butter sheet cake is just 15 minutes. This gives you plenty of time to gather your ingredients and get everything ready before you start baking. Just imagine the delightful smell of peanut butter and sugar filling your kitchen!
Baking Time
Once the batter is mixed, pop it in the oven! The baking time is approximately 15 minutes, so it’s fast enough for those unexpected cravings. Keep an eye on your cake to ensure you don’t overbake it.
Total Time to Enjoy Your Creation
In just 30 minutes, you can savor this delicious peanut butter sheet cake. Whether it’s for a gathering or a spontaneous treat, this cake comes together quickly, allowing you to indulge in a peanut butter lover’s dream without waiting long. For more tips on getting the most out of your baking experience, check out this fantastic guide on how to bake cakes perfectly.
Nutritional Facts for Peanut Butter Sheet Cake
Calories per Serving
A single serving of peanut butter sheet cake contains approximately 350 calories. This indulgent slice is perfect for satisfying your sweet tooth while still enjoying a comforting dessert.
Protein Content
With about 5 grams of protein per serving, this cake provides a delightful balance of flavor and nutrition. The addition of peanut butter helps boost the protein content, making it a more filling treat.
Sugar Levels
Each piece holds around 20 grams of sugar. While it's a sweet treat, you may want to enjoy it in moderation. Pairing it with a source of protein or fiber can help balance those sugar levels for a more satisfying experience.
For more information on balancing desserts with your dietary needs, check out resources from the American Heart Association. Enjoy your baking!
FAQs about Peanut Butter Sheet Cake
How do I store leftover peanut butter sheet cake?
To keep your delicious peanut butter sheet cake fresh, store it in an airtight container at room temperature for up to three days. If you want to extend its life, refrigerate it, but be aware that refrigeration may slightly alter the texture. For longer storage, you can freeze slices in plastic wrap and then in a freezer bag for up to three months. Just thaw overnight in the fridge when you’re ready to enjoy!
Can I make this cake ahead of time?
Absolutely! This peanut butter sheet cake can be made a day in advance. Just ensure it's completely cooled before covering it to prevent moisture buildup. You can frost it just before serving for the best taste. Guests won’t mind a short wait while you pour on that gooey glaze!
What can I substitute for buttermilk?
If you don’t have buttermilk on hand, it’s easy to make your own. Simply combine 1 tablespoon of lemon juice or white vinegar with enough milk to make 1 cup. Let it sit for about five minutes, and you’ll have a perfect buttermilk substitute to enhance the flavor and moisture of your cake!
Feel free to explore this guide on buttermilk alternatives for more options. Happy baking!
Conclusion on Peanut Butter Sheet Cake
Embrace the joy of homemade desserts
There’s something truly special about whipping up a homemade dessert like this peanut butter sheet cake. Its moist texture and decadent glaze make it a crowd-pleaser for any occasion. So, gather your loved ones, share the joy, and indulge in a slice of delightful goodness!

Peanut Butter Sheet Cake
Equipment
- medium pot
- separate bowl
- 12X17 jellyroll pan
- small pot
Ingredients
Cake
- 0.25 cup creamy peanut butter
- 1 cup water
- 0.5 cup butter
- 1 cup sugar
- 1 cup brown sugar
- 2 cups flour
- 1 teaspoon salt
- 1 teaspoon baking soda
- 0.5 cup buttermilk see note for easy substitution
- 1 teaspoon vanilla
Frosting
- 0.75 cup butter
- 6 Tablespoons buttermilk
- 0.5 cup peanut butter
- 3.5 cups powdered sugar
- 1 Tablespoon vanilla
Instructions
Main 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!
- 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.





Leave a Reply