Introduction
Get ready for a dessert experience that will make your taste buds sing! We’re diving into the world of the Reese’s Peanut Butter Cup Cake. This isn’t just any cake; it’s a celebration of that iconic, irresistible pairing: rich chocolate and creamy peanut butter. Every bite is pure bliss, a perfect balance of sweet and salty that will leave you wanting more.
You might think a cake this amazing would be complicated, but I promise it’s surprisingly simple to make. We’ll use straightforward techniques and readily available ingredients to create a show-stopping dessert. Even if you’re new to baking, you’ll find these steps easy to follow. It’s a recipe designed for success, bringing joy to your kitchen without any stress.
So, clear your counter, preheat your oven, and prepare to create something truly magical. This Reese’s Peanut Butter Cup Cake is perfect for birthdays, holidays, or just because you deserve a treat. Trust me, your friends and family will be raving about this one. Let’s get baking!
Cooking Time & Prep Time
- Prep Time: 50 minutes
- Cooking Time: 30-35 minutes
- Total Time: 80-85 minutes (plus cooling time for the cake)
Small tip: To save time, you can bake the cake layers a day in advance. Wrap them tightly in plastic wrap once completely cooled and store at room temperature.
Ingredients
This recipe makes 12-16 generous servings.
For the Chocolate Cake
- 2 cups (250g) all-purpose flour
- 2 cups (400g) granulated sugar
- ¾ cup (75g) unsweetened cocoa powder
- 2 teaspoons baking soda
- 1 teaspoon baking powder
- 1 teaspoon salt
- 1 cup (240ml) buttermilk (or 1 cup milk + 1 tablespoon white vinegar/lemon juice, let sit for 5 minutes)
- ½ cup (120ml) vegetable oil
- 2 large eggs, at room temperature
- 1 teaspoon vanilla extract
- 1 cup (240ml) hot water or hot brewed coffee
For the Peanut Butter Frosting
- 1 cup (226g) unsalted butter, softened
- 1 cup (250g) creamy peanut butter (not natural, oil-separated kind)
- 4 cups (480g) powdered sugar, sifted
- ½ teaspoon vanilla extract
- ¼ cup (60ml) heavy cream or milk, plus more if needed
- Pinch of salt (optional, if using unsalted peanut butter)
For the Garnish
- 10-12 regular-sized Reese’s Peanut Butter Cups, chopped
- 1 bag (approx. 10 oz) Reese’s Mini Peanut Butter Cups, unwrapped
- ½ cup Reese’s Pieces candies
Step-by-Step Instructions
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Preheat Oven and Prepare Pans
Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans. You can also line the bottoms with parchment paper for easy removal. This step ensures your cakes won’t stick.
Small tip: Make sure your pans are evenly coated to prevent any sticking. A baking spray with flour works wonderfully too!
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Combine Dry Ingredients
In a large bowl, whisk together the all-purpose flour, granulated sugar, cocoa powder, baking soda, baking powder, and salt. Make sure there are no lumps and everything is well combined. This is your dry mixture.
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Mix Wet Ingredients
In a separate medium bowl, whisk together the buttermilk, vegetable oil, eggs, and vanilla extract. Whisk until everything is fully incorporated. These are the liquids that will bring your cake to life.
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Combine Wet and Dry Mixtures
Pour the wet ingredients into the dry ingredients. Mix with a spatula or an electric mixer on low speed until just combined. Be careful not to overmix at this stage. Overmixing can lead to a tough cake.
Small tip: Stop mixing as soon as you see no more streaks of flour. A few small lumps are fine.
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Add Hot Liquid
Carefully pour the hot water or hot brewed coffee into the batter. Stir gently until the batter is smooth and thin. The hot liquid helps to bloom the cocoa and gives the cake a wonderful, moist texture.
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Bake the Cakes
Divide the batter evenly between the two prepared cake pans. Bake for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean. Let the cakes cool in the pans for 10-15 minutes before inverting them onto a wire rack to cool completely. They must be fully cool before frosting.
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Prepare the Peanut Butter Frosting Base
While the cakes cool, make the frosting. In a large bowl, beat the softened butter with an electric mixer until light and fluffy. Add the creamy peanut butter and beat again until well combined and smooth. Scrape down the sides of the bowl as needed.
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Finish the Frosting
Gradually add the sifted powdered sugar to the butter and peanut butter mixture, beating on low speed until combined. Increase speed to medium and beat until fluffy. Add the vanilla extract, heavy cream or milk, and a pinch of salt (if using). Beat until the frosting is light, fluffy, and spreadable. Add more cream or milk, one teaspoon at a time, if the frosting is too thick.
Small tip: Sifting your powdered sugar is key for a super smooth, lump-free frosting. Don’t skip this step!
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Assemble the Cake Layers
Once the cake layers are completely cool, use a serrated knife to level the tops if they have domes. Place one cake layer on your serving plate or cake stand. Spread about 1 cup of peanut butter frosting evenly over the top.
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Frost the Cake
Carefully place the second cake layer on top. Apply a thin layer of frosting all over the cake (top and sides) to create a “crumb coat.” This traps any loose crumbs. Chill the cake in the refrigerator for 15-20 minutes. Then, apply the remaining frosting, smoothing it out with an offset spatula or knife.
Small tip: The crumb coat is essential for a beautiful, crumb-free final frosting layer. Don’t rush it!
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Decorate Your Masterpiece
Now for the fun part! Arrange the chopped regular Reese’s Peanut Butter Cups on top of the cake. Press the mini Reese’s Peanut Butter Cups around the sides of the cake, or pile them on top. Scatter the Reese’s Pieces candies over the top and sides. Stand back and admire your delicious creation!
Tips & Variations
- Gluten-Free Option: Easily make this cake gluten-free by swapping the all-purpose flour for a 1:1 gluten-free baking flour blend. Ensure your baking powder is also gluten-free.
- Vegan Option: For a vegan version, use an egg replacer (like flax eggs) for the eggs, plant-based milk and butter substitutes, and ensure your cocoa powder and peanut butter cups are vegan-friendly. There are many great vegan chocolate and peanut butter cup brands available!
- Add More Protein: Stir 1-2 scoops of unflavored or vanilla protein powder into the frosting mixture. You may need to add a little extra milk to maintain the desired consistency. You could also sprinkle chopped roasted peanuts on top for added crunch and protein.
- Spicy Kick: For a subtle warmth, add a pinch (¼ teaspoon) of cayenne pepper to the chocolate cake batter. For a bolder flavor, you can also add a tiny pinch to the peanut butter frosting. It creates a surprising and delicious contrast!
- Mini Cupcakes: Instead of a layer cake, divide the batter into cupcake liners. Bake for 18-22 minutes. Frost and decorate individual cupcakes for easy serving.
- Cream Cheese Frosting: For a tangier frosting, replace half of the butter in the frosting recipe with softened cream cheese. This adds a lovely complexity to the peanut butter flavor.
Nutritional Information
Approximate values per serving (based on 12 servings):
- Calories: 580-620
- Protein: 10-12g
- Carbohydrates: 70-75g
- Fat: 30-35g
Note: These values are approximate and can vary depending on the specific brands and exact quantities of ingredients used.
Health Benefits
While this is a decadent treat, some of its core ingredients do offer nutritional value!
- Peanut Butter: It’s a great source of plant-based protein, which is essential for muscle repair and growth. Peanut butter also provides healthy monounsaturated and polyunsaturated fats, which are good for heart health. It contains important vitamins and minerals like Vitamin E, magnesium, phosphorus, zinc, and niacin (Vitamin B3).
- Cocoa Powder: Unsweetened cocoa powder is packed with antioxidants, especially flavonoids. These compounds can help reduce inflammation and may improve blood flow. Cocoa is also known for its potential to boost mood and cognitive function.
- Eggs: Eggs are a complete protein source, meaning they contain all nine essential amino acids. They are also rich in choline, a vital nutrient for brain health and metabolism. Eggs provide Vitamin D, Vitamin B12, and selenium.
- Milk/Buttermilk: These dairy products are excellent sources of calcium, crucial for strong bones and teeth. They also provide protein, Vitamin D (often fortified), and B vitamins.
