Easy Reese’s Peanut Butter Cake Recipe

Quick Answer: A Reese’s Peanut Butter Cake is an easy, crowd-pleasing dessert made with a moist chocolate cake, creamy peanut butter frosting, and plenty of chopped Reese’s Peanut Butter Cups. Whether you use a box mix or bake from scratch, this decadent cake comes together in under an hour and is perfect for birthdays, potlucks, holidays, or anytime you’re craving the classic chocolate-and-peanut-butter combination.

❤️ Why You’ll Love This Recipe

• Rich chocolate and peanut butter flavors everyone loves.
• Easy enough for beginner bakers.
• Works with a box mix or homemade cake.
• Perfect for birthdays, parties, and special occasions.
• Loaded with Reese’s Peanut Butter Cups in every bite.

I love making this Reese’s Peanut Butter Cake whenever I need a dessert that’s guaranteed to impress. It combines a rich chocolate cake with fluffy peanut butter frosting and plenty of chopped Reese’s Peanut Butter Cups, creating the ultimate treat for chocolate and peanut butter lovers. Every bite delivers the familiar candy bar flavors in a soft, homemade cake.

One of the best things about this recipe is how flexible it is. You can keep things simple with a chocolate cake mix, make everything from scratch, or even try the no-bake version when you don’t want to turn on the oven. However you make it, this cake is always a crowd favorite and disappears quickly at parties and family gatherings.

Ingredients You’ll Need

For the Chocolate Cake

• 1 box chocolate cake mix (plus the eggs, oil, and water called for on the package) or your favorite homemade chocolate cake recipe.

For the Peanut Butter Frosting

• 1 cup creamy peanut butter – Use commercial creamy peanut butter rather than natural peanut butter for the smoothest frosting.
• 3 tablespoons softened butter – Creates a light, fluffy frosting.
• 1½ cups powdered sugar – Sweetens and thickens the frosting.
• 3–4 tablespoons heavy cream – Adjust to reach a smooth, spreadable consistency.

Topping

• 12–15 mini Reese’s Peanut Butter Cups, halved – The signature topping that gives this cake its classic candy flavor.
• Melted chocolate (optional) – Drizzle over the finished cake for an extra decadent touch.

Equipment You’ll Need

• 9×13-inch baking pan
• Large mixing bowl
• Electric hand mixer or stand mixer
• Measuring cups
• Measuring spoons
• Rubber spatula
• Cooling rack
• Offset spatula or butter knife for frosting
• Sharp knife for chopping Reese’s cups

How to Make Reese’s Peanut Butter Cake

1. Bake the cake.
   Prepare the chocolate cake according to the package directions in a greased 9×13-inch pan. Bake until done, then transfer to a wire rack to cool completely.
2. Make the frosting.
   Beat the peanut butter and softened butter together for about 2 minutes until light and fluffy.
3. Add the remaining ingredients.
   Mix in the powdered sugar, then gradually add the heavy cream until the frosting is smooth and spreadable.
4. Frost the cake.
   Once the cake has cooled completely, spread the peanut butter frosting evenly over the top.
5. Decorate.
   Press the halved Reese’s Peanut Butter Cups across the frosted cake and drizzle with melted chocolate if desired.
6. Slice and serve.
   Cut into squares and enjoy immediately or refrigerate until ready to serve.

Tips

1. Let the cake cool completely before frosting to prevent the frosting from melting.
2. Use commercial creamy peanut butter for the smoothest frosting. Natural peanut butter can separate and make the frosting greasy.
3. Don’t overmix the cake batter. Mix until just combined to keep the cake tender.
4. Add the Reese’s cups after baking. Placing them in the batter before baking causes them to melt into the cake.
5. Chill briefly before slicing if you’d like cleaner cuts and neater servings.

Storage & Make-Ahead

Room Temperature

Store the frosted cake covered at room temperature for up to 4 days.

Refrigerator

Keep leftovers in an airtight container in the refrigerator for up to 7 days. Let the cake sit at room temperature for about 20 minutes before serving for the best texture.

Freezer

Freeze unfrosted cake layers, tightly wrapped, for up to 3 months. Frosted slices can be frozen for up to 1 month in an airtight container.

Make-Ahead

Bake the cake up to 2 days in advance, wrap it tightly, and frost it on the day you plan to serve it for the freshest presentation.

If you love easy no-bake desserts, you might also enjoy this Strawberry Cheesecake Dip Recipe for another crowd-pleasing option.

Easy Variations

• No-Bake Reese’s Peanut Butter Cake – Skip the oven by using a crushed Oreo, brownie, or graham cracker crust with a creamy peanut butter filling. Chill for at least 4 hours before serving.
• Cream Cheese Peanut Butter Frosting – Swap the buttercream for a frosting made with cream cheese, peanut butter, powdered sugar, heavy cream, and vanilla for a tangy twist.
• From-Scratch Chocolate Cake – Make the cake base from scratch using flour, cocoa powder, sugar, eggs, buttermilk, oil, vanilla, and hot coffee or water for a richer homemade flavor.
• Chocolate Ganache Finish – Drizzle melted chocolate or chocolate ganache over the frosted cake for an extra indulgent presentation.
• Peanut-Free Version – Replace the peanut butter with sunflower seed butter or cookie butter and use peanut-free chocolate candies for a similar dessert that’s suitable for those with peanut allergies.

What to Serve With

This rich chocolate and peanut butter cake pairs well with:

• Vanilla ice cream
• Fresh strawberries or raspberries
• Whipped cream
• Hot coffee
• Cold milk
• Chocolate milk
• Vanilla latte
• Chocolate peanut butter smoothie

Frequently Asked Questions

Can I use a chocolate cake mix?

Yes. A chocolate cake mix is the easiest option and makes this recipe especially beginner-friendly. Simply prepare it according to the package directions before adding the peanut butter frosting and Reese’s topping.

Can I make this cake ahead of time?

Yes. Bake the cake up to 2 days in advance, wrap it tightly, and frost it the day you plan to serve it.

Can I use crunchy peanut butter?

You can, but creamy peanut butter creates a much smoother frosting. Crunchy peanut butter works better as a topping or mix-in than as the primary frosting ingredient.

Why did my cake sink in the middle?

A sunken cake is usually caused by underbaking, opening the oven too early, overmixing the batter, or using too much leavening. Test the cake with a toothpick before removing it from the oven.

How long does Reese’s Peanut Butter Cake last?

Store it covered at room temperature for up to 4 days or refrigerate it in an airtight container for up to 7 days.

Can I freeze the cake?

Yes. Unfrosted cake layers freeze well for up to 3 months, while frosted slices can be frozen for up to 1 month.

Conclusion

I love this Reese’s Peanut Butter Cake because it delivers everything chocolate-and-peanut-butter fans could want in one dessert. The moist chocolate cake, creamy peanut butter frosting, and generous topping of Reese’s Peanut Butter Cups create a rich, bakery-worthy treat that’s surprisingly simple to make. Whether you choose the quick box mix version or bake everything from scratch, it’s a dessert that’s guaranteed to impress family and friends.

For more easy dessert ideas to round out your baking repertoire, try this Lemon Blueberry Cheesecake Dump Cake or these Cheesecake Brownies for your next gathering. And if you want more chocolate and peanut butter goodness, this chocolate peanut butter chia smoothie makes a great companion treat.

Now grab your peanut butter and get baking.