Peanut Butter Cup Sheet Cake
Are you ready to indulge in a dessert that will rock your taste buds? Look no further, because this Peanut Butter Cup Sheet Cake is a dreamy, decadent delight that combines two of the most loved treats: cake and peanut butter cups! Imagine a moist chocolate cake topped with a luscious peanut butter frosting, and to take it over the top, it’s scattered with real peanut butter cups. This delicious creation is not only a feast for the eyes but also a crowd-pleaser for any occasion!
What makes this cake even more special is how incredibly simple it is to whip up. With minimal prep time and straightforward steps, you can have this beauty baked and ready to serve in no time. Whether you’re celebrating a birthday, hosting a potluck, or just treating yourself for a job well done, this Peanut Butter Cup Sheet Cake is your ticket to sweet satisfaction. If you love this beyond-delicious treat, you might also enjoy our other recipes like the classic Chocolate Chip Cookies—the comfort of nostalgia in your kitchen! So roll up your sleeves and get ready to dive into the delightful world of baking!

What is Peanut Butter Cup Sheet Cake?
So, you might be wondering, what in the world is a Peanut Butter Cup Sheet Cake? Sounds fancy, right? Here’s the scoop: it’s pretty much the cake version of your childhood dreams. Can you remember sneaking that first bite of your favorite peanut butter cup? This cake captures that magic and places it in a shareable format! The name alone might make your mouth water, and isn’t it amusing to think how something so simple can hold such power? Maybe ‘the way to a man’s heart is through his stomach’ really rings true here! So, gather your ingredients, and let’s bake up a storm; you won’t regret trying this tasty delight!
Why You’ll Love This Peanut Butter Cup Sheet Cake
You are going to absolutely adore this Peanut Butter Cup Sheet Cake for so many reasons! First up, the star of the show is undoubtedly the perfect harmony between rich chocolate cake and creamy peanut butter frosting. It’s like a party on your palate! Think about how satisfying it is to slice into a fluffy cake topped with velvety frosting sprinkled with chunks of real peanut butter cups.
And guess what? You’ll be saving some bucks by making it at home as opposed to splurging at a bakery! It’s an economical pick that’s way more fun to create. Another bonus—you can customize it with your favorite toppings or even add some crushed cookies for texture! Comparatively, if you are a fan of brownies, you’ll definitely want to check out our fudgy brownie recipe too. So, are you ready to whip this deliciousness up?
How to Make Peanut Butter Cup Sheet Cake
Quick Overview
Making this Peanut Butter Cup Sheet Cake is a breeze. Prepare to enjoy a perfect blend of flavors that’s as enticing as it is delicious! It takes under an hour from start to finish, featuring a moist chocolate base with the dreamy nutty goodness of peanut butter frosting. A quick recipe that promises satisfaction for every bite!
Key Ingredients for Peanut Butter Cup Sheet Cake:
- 1 ¾ cups all-purpose flour
- 2 cups granulated sugar
- ¾ cup unsweetened cocoa powder
- 1 ½ teaspoons baking powder
- 1 ½ teaspoons baking soda
- 1 teaspoon salt
- 2 large eggs
- 1 cup whole milk
- ½ cup vegetable oil
- 2 teaspoons vanilla extract
- 1 cup boiling water
- 1 cup creamy peanut butter
- 4 cups powdered sugar
- 1 cup butter (softened)
- 2 cups mini peanut butter cups (chopped for topping)
Step-by-Step Instructions:
- Preheat your oven: Begin by preheating your oven to 350°F (175°C) and greasing a half-sheet baking pan.
- Mix dry ingredients: In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt until combined.
- Add wet ingredients: Add the eggs, milk, vegetable oil, and vanilla extract. Beat on medium speed for about 2 minutes, then stir in the boiling water (the batter will be thin).
- Pour and bake: Pour the batter into the prepared baking pan and bake for 30 to 35 minutes or until a toothpick inserted in the center comes out clean.
- Prepare peanut butter frosting: While the cake cools, beat together the creamy peanut butter, softened butter, and powdered sugar until smooth and creamy.
- Frost the cake: Once the cake is completely cooled, spread the peanut butter frosting evenly across the top and sprinkle with chopped peanut butter cups.
- Serve and enjoy: Cut into squares and serve. Enjoy this indulgent dessert with friends and family!
What to Serve Peanut Butter Cup Sheet Cake With
To enhance this delightful Peanut Butter Cup Sheet Cake, consider serving it with a scoop of vanilla ice cream or whipped cream for added decadence. For a charming twist, side it with fresh fruit, like strawberries or bananas, which perfectly balances the sweetness of the cake. You could even pair it with a rich cup of coffee or a refreshing glass of milk to satisfy your sweet tooth.
Top Tips for Perfecting Peanut Butter Cup Sheet Cake
- Don’t skip the boiling water: Adding boiling water to the batter helps create a super moist cake!
- Room temperature ingredients: Make sure your eggs and butter are at room temperature for better incorporation, resulting in a smooth batter.
- Experiment with toppings: Customize with your favorite candy bars or use crunchy peanut butter instead for added texture.
- Watch closely while baking: Oven temperatures can vary, so check for doneness a few minutes before the timer goes off.
Storing and Reheating Tips
If you have leftovers, this Peanut Butter Cup Sheet Cake can last for about 3 to 4 days if stored in an airtight container at room temperature. For longer storage, wrap it tightly in plastic wrap and freeze for up to 3 months. When you’re ready to enjoy it again, simply thaw overnight in the refrigerator and bring it to room temperature before slicing. For a warm treat, pop a slice in the microwave for a few seconds!
Now that you’re armed with all the knowledge to create your own Peanut Butter Cup Sheet Cake, it’s time to get baking! Enjoy this cake at your next gathering, or just treat yourself on a cozy day at home. Happy baking!

Peanut Butter Cup Sheet Cake
Ingredients
Method
- Preheat your oven: Begin by preheating your oven to 350°F (175°C) and greasing a half-sheet baking pan.
- Mix dry ingredients: In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt until combined.
- Add wet ingredients: Add the eggs, milk, vegetable oil, and vanilla extract. Beat on medium speed for about 2 minutes, then stir in the boiling water (the batter will be thin).
- Pour and bake: Pour the batter into the prepared baking pan and bake for 30 to 35 minutes or until a toothpick inserted in the center comes out clean.
- Prepare peanut butter frosting: While the cake cools, beat together the creamy peanut butter, softened butter, and powdered sugar until smooth and creamy.
- Frost the cake: Once the cake is completely cooled, spread the peanut butter frosting evenly across the top and sprinkle with chopped peanut butter cups.
- Serve and enjoy: Cut into squares and serve. Enjoy this indulgent dessert with friends and family!

Leave a Reply