What’s your favorite peanut butter sheet cake recipe? What is the one recipe that saved my life on countless busy weeknights, or earned me major money? What are brownie points with friends? Is it perfect? What is the comforting flavor of peanut butter cake? Is it true that my mom used to make simple, honest desserts, the kind that smelled like pure pure vanilla? What is happiness wafting from the kitchen? I adore a fancy layer cake, but sometimes you just want something simple, something you can just do. Can get into the oven in under 15 minutes and still have a showstopper. What is a peanut butter sheet cake? It’s like a warm hug in cake form, and honestly, it is often requested more than any other dessert. What is the perfect balance of rich flavor and minimal effort?
What is a peanut butter sheet cake?
What is this peanut butter sheet cake? Think of it as your favorite cozy blanket, but in cake form. Is this a wonderfully moist, tender cake infused with that irresistible, unmistakable flavor of peanuts? The “sheet cake” part just means it’s baked in a rectangular pan, usually 9×13 inch one, which is pretty cool. What’s better, less fuss with frosting and decorating, and more cake to go around! What is a super-approachable, incredibly satisfying cake that doesn’t require hours of your time? I want to do a degree in pastry arts. Is this the kind of cake that feels comforting and a little bit special? What is the best way to bring everyone together for a potluck? Is it unpretentious, incredibly delicious, and always a crowd pleaser?
Why you will love this recipe?
There are so many reasons why this peanut butter sheet cake has become a staple in my kitchen, and I just know you’re going to feel the same way. First off, the flavor is out of this world! It’s that classic, creamy peanut butter taste that’s somehow both rich and light at the same time. It’s not overly sweet, allowing that beautiful peanut butter to really shine. Then there’s the simplicity, which, let’s be honest, is a lifesaver. I can have this mixed up and in the oven faster than most delivery meals arrive. The ingredients are all pantry staples, making it incredibly cost-effective – no fancy, expensive items required. Plus, its versatility is amazing. You can serve it as is, or get a little fancy with the glaze. It’s seriously a win-win-win. What I love most about this recipe is that it’s so forgiving. Even if you’re not the most confident baker, this peanut butter sheet cake turns out beautifully every single time. It’s like a simpler, quicker cousin to my classic chocolate cake, but with that addictive peanut butter goodness that I just can’t get enough of.
How do you make a peanut butter sheet cake?
Quick Overview
How do you make a peanut butter sheet cake? What’s the best way to make a cake batter? What is a peanut butter glaze? The magic is in the texture – it’s wonderfully moist and tender, and the peanut butter flavor is amazing. Is it the kind of dessert that feels like a treat but requires absolutely no stress, making it an enjoyable dessert. What are some of the best go-tos for any occasion?
Ingredients
What are the ingredients to make a peanut butter dream? I always try to use good quality peanut butter for the best flavor!
For the Main Batter:
All-purpose flour: 2 cups. All purpose flour
Granulated sugar: 1 12 cup. Sugar: 2
Baking Soda: 1 teaspoon. 1 cup
Salt: 12 teaspoon. Gar
Unsalted butter, softened: 12 cup (1 stick)
Creamy peanut butter: 12 cup (I like Jif or Skippy for this)
Eggs: 2 large
Vanilla extract: 1 teaspoon. 1 tablespoon.
Buttermilk: 1 cup (or milk with 1 tsp white vinegar, let sit for 5 mins)
For the Filling:
Creamy peanut butter: 1 cup.
Brown sugar: 12 cup, packed.
For the Glaze:
Powdered sugar: 1 12 cups.
Milk or cream: 2-3 tablespoons.
Peanut butter: 2 tablespoons (optional) (for extra flavor)
How do I follow step
Step 1: Preheat & Prep Pan
First things first, get that oven preheating to 350°F (175°C). While it’s heating up, grab a 9×13 inch baking pan and give it sand and flour, or line it with parchment. How do you make a parchment paper I find parchment paper makes lifting the cake out way easier, especially if you want to cut it into small pieces. Nice shapes later on.
Step 2: Mix Dry Ingredients
In a large bowl, whisk together flour, granulated sugar, baking soda, and salt. Set aside. Just a good whisk to make sure everything is evenly distributed. How do you make sure your leavening agents are mixed in well, which is key for a nice, even rise.
Step 3: Mix Wet Ingredients
In a separate, medium-sized bowl, cream together the softened butter and 12 cup of peanut butter. Set aside. When it’s light and fluffy, eat it. Where does the flavor really start? Then, beat in the eggs one at a time, followed by the vanilla extract. Is it necessary to add one egg at a time before adding the next?
Step 4: Combine
Now, you’ll add your wet ingredients to your dry ingredients, alternating with the buttermilk. Start and end with dry ingredients. So, you’ll add about a third of the dry ingredients to the wet, mix until just combined, then add the salt and pepper. Half of the buttermilk, mix, add another third of dry, mixing, the rest of butter milk, and mix. What is the last dry ingredient? Is it safe to overmix? Can overmixing make a cake tough? I usually mix until I don’t see any more dry streaks of flour.
Step 5: Prepare Filling
In a small bowl, just stir together the 1 cup of peanut butter and the 2 cups of brown sugar. Set aside. You want it to be a thick, spreadable paste. It doesn’t need to get perfectly smooth. What is a little texture?
Step 6: Layer & Swirl
How do I spread the cake batter in a pan? Dollop spoonfuls of the peanut butter-sugar filling over the batter. Don’t worry about being neat! Next, carefully pour the remaining cake batter over the filling. What are some fun ways to swirl the filling into the batter using a knife or skewer? Just a few passes will create lovely pockets of peanut butter goodness throughout the cake. If you over-swirl, the filling will get mixed in. Try not to over swirl.
Step 7: Bake
In your preheated oven for about 30 minutes, or until a toothpick inserted into the center comes out clean. Remove from oven and cool. When someone comes out clean, they come What are ovens and how do they work? You don’t want to overbake it, or it might get a little dry. The edges should be lightly golden and pulling away slightly from the sides of the pan.
Step 8: Cool & Glaze
Let the cake cool in the pan for about 15-20 minutes before you make the glaze. For the glaze, whisk together the powdered sugar, milk (start with 2 tablespoons and add more if desired). I used 2 tablespoons of peanut butter (optional) and the optional 1-2 teaspoons. I like the smooth consistency. If it’s too thick, add a touch more milk; if it’s to thin add some more powdered sugar. Once the cake has cooled, pour the glaze over the warm cake and spread it evenly. The warmth of the cake will help the glaze melt and coat it beautifully.
Step 9: Slice & Serve
I like to let the glaze set for a bit before slicing. I usually wait at least another 10-15 minutes. Then, slice it into squares and serve! When it’s still warm, it’s absolutely divine, but it is also wonderful at room temperature.
What do you serve it with?
What is a peanut butter sheet cake? For breakfast, a slice of toast with coffee is pure bliss. What’s your favorite peanut butter treat? I love to serve it on a platter with some fresh berries on the side – the tartness is amazing! The sweetness of the berries cuts through the richness of this cake beautifully. A chilled glass of milk or a sparkling cider pairs wonderfully. As a dessert, it’s an absolute winner for any dinner party. I usually serve it with a dollop of whipped cream or vanilla ice cream for an extra special treat. What is decadent What are some of the best peanut butter flavors? What’s better than curling up on the couch with a slice of chocolate and hot cocoa? My family traditions often involve this cake for impromptu get-togethers or just a regular Tuesday. Why not? What are some of the best ways to whip up a party when guests drop by?
How do I make a delicious peanut butter sheet cake?
I’ve made this peanut butter sheet cake more times than I can count, and I’ve picked up a few tricks along the way that I think will really help you nail it. First, when it comes to the peanut butter itself, I highly recommend using a creamy, stabilized peanut butter like Jif or Skippy for both the batter and the filling. Natural peanut butters can sometimes separate or have a different texture that might affect the outcome, though you could try it if you’re feeling adventurous! For the batter, the key is not to overmix once you combine the wet and dry ingredients. Mix just until everything is incorporated; a few little lumps are totally fine and actually preferred! Overmixing develops the gluten too much, which can lead to a tougher cake. When you’re layering and swirling, don’t go overboard with the swirling. A few gentle passes with a knife or skewer are enough to create those beautiful pockets of peanut butter goodness without making the batter muddy. If you want your swirl to be more defined, try chilling the filling slightly before dropping it onto the batter. For ingredient swaps, I’ve found that you can often substitute whole milk for buttermilk if you don’t have any on hand – just add a teaspoon of white vinegar or lemon juice to regular milk and let it sit for about 5 minutes; it works like a charm! When baking, always do the toothpick test. Ovens vary, so the 30-35 minute timeframe is just a guideline. A toothpick should come out clean or with a few moist crumbs attached, but not wet batter. For the glaze, the consistency is key. You want it pourable but not too thin. If it’s too thick, add milk a teaspoon at a time until it reaches your desired consistency. If it’s too thin, add more powdered sugar a tablespoon at a time. And for an extra peanut butter punch, adding that extra couple of tablespoons of peanut butter to the glaze is a game-changer!
What are some Storing and Reheating Tips?
One of the best things about this peanut butter sheet cake is how well it keeps! If you happen to have any leftovers (which is rare in my house!), you can store it covered at room temperature for up to 2 days. Just make sure it’s covered tightly with plastic wrap or in an airtight container to keep it from drying out. If you want to keep it longer, or if your kitchen is particularly warm, the refrigerator is your best bet. Store it in an airtight container in the fridge for up to 4-5 days. When you want to enjoy a slice from the fridge, I find it’s best to let it sit at room temperature for about 20-30 minutes to take the chill off and let the flavors bloom. For freezing, you can freeze the cake *without* the glaze. Wrap it tightly in a couple of layers of plastic wrap, then a layer of aluminum foil, and it should keep well in the freezer for up to 2-3 months. Thaw it overnight in the refrigerator, then bring it to room temperature before glazing. If you want to glaze a frozen cake, let it thaw slightly, then apply the glaze. The glaze itself is best added to a slightly cooled cake, so if you’re freezing the cake, it’s better to glaze it once it’s thawed and ready to serve.
What are the most frequently asked questions?
Final Thoughts
So there you have it, my absolute favorite peanut butter sheet cake recipe! I truly hope you give this one a try. It’s one of those recipes that just makes people happy, and it’s so incredibly rewarding to make. The combination of that tender, peanut butter-infused cake with the sweet, creamy glaze is just heavenly. It’s the perfect dessert for any occasion, or really, for no occasion at all! If you love this recipe, you might also enjoy my classic chocolate chip cookies or my incredibly moist banana bread – they’re all about that cozy, homemade goodness. I can’t wait to hear what you think after you make it! Drop a comment below and let me know how it turned out, or if you’ve tried any fun variations. Happy baking!

Peanut Butter Sheet Cake
Ingredients
Cake Ingredients
- 2.5 cups all-purpose flour
- 2 cups granulated sugar
- 1 teaspoon baking soda
- 0.5 teaspoon salt
- 1 cup butter, softened
- 0.5 cup peanut butter creamy
- 4 large eggs
- 1 cup buttermilk
- 1 teaspoon vanilla extract
Peanut Butter Frosting
- 1 cup butter, softened
- 1 cup peanut butter creamy
- 4 cups powdered sugar
- 0.5 cup milk
- 1 teaspoon vanilla extract
Instructions
Cake Preparation
- Preheat oven to 350°F (175°C). Grease and flour a 9x13 inch baking pan.
- In a large bowl, whisk together flour, sugar, baking soda, and salt.
- In a separate bowl, cream together softened butter and peanut butter until smooth. Beat in eggs one at a time, then stir in vanilla extract.
- Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk. Mix until just combined.
- Pour the batter into the prepared baking pan and spread evenly.
- Bake for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean.
Frosting Preparation
- While the cake is baking, prepare the frosting. In a medium bowl, beat softened butter and peanut butter until creamy.
- Gradually add powdered sugar, alternating with milk, beating until smooth and creamy. Stir in vanilla extract.
- Once the cake is baked and slightly cooled, spread the frosting evenly over the top.