Reese’s Peanut Butter Brownie Cupcakes

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If you are looking for the ultimate mashup of two iconic treats, these Reese’s Peanut Butter Brownie Cupcakes are a total game-changer. This recipe takes a rich, fudgy brownie base and hides a whole Reese’s peanut butter cup inside for a gooey, salty-sweet surprise. Topped with a silky peanut butter buttercream, these are far more than just a cupcake—they are a decadent, multi-layered dessert experience.

The beauty of these brownie cupcakes is the contrast in textures. You get the chewy edges of a brownie, the smooth chocolate-covered peanut butter center, and the airy lightness of the frosting. It is a high-impact dessert that is surprisingly simple to assemble, making it a “pot of gold” for parties, bake sales, or a special weekend treat.

Why You’ll Love This Recipe

• The Hidden Center: A whole peanut butter cup baked into the middle creates a stunning cross-section.
• Fudgy Over Cakey: Using a brownie base instead of cake batter makes these incredibly rich and dense.
• The Perfect Pairing: Combines the world’s most popular flavor duo: chocolate and peanut butter.
• Crowd Pleaser: These disappear instantly at any gathering and look like they came from a boutique bakery.

Ingredients

The Brownie Base

• 1 box (18.4 oz) Fudgy Brownie Mix (plus ingredients called for on the box: eggs, oil, water)
• 12–15 Full-size Reese’s Peanut Butter Cups (frozen)

The Peanut Butter Frosting

• ½ cup Unsalted Butter, softened
• 1 cup Creamy Peanut Butter
• 2 cups Powdered Sugar, sifted
• 2–3 Tbsp Heavy Cream or Milk
• 1 tsp Vanilla Extract
• Optional Garnish: Chopped Reese’s, mini chocolate chips, or a chocolate drizzle.

Instructions

1. Prep the Kitchen

Preheat your oven to 350°F (175°C). Line a standard cupcake tin with 12–15 paper liners. Pro Tip: Put your Reese’s cups in the freezer for 30 minutes before starting; this helps them hold their shape better during baking.

2. Mix the Brownie Batter

Prepare the brownie mix according to the package directions. Stir until the batter is smooth and well-combined.

3. Assemble the Cupcakes

Place about one tablespoon of brownie batter into the bottom of each cupcake liner. Place one frozen Reese’s cup right on top of the batter. Spoon more batter over the top of the Reese’s cup until it is completely covered and the liner is about ¾ full.

4. Bake and Cool

Bake for 20–25 minutes. Use a toothpick to check the brownie portion (don’t hit the peanut butter center!). Let the cupcakes cool completely in the pan before frosting.

5. Whip the Frosting

In a large bowl, beat the butter and peanut butter together until smooth. Gradually add the powdered sugar, cream, and vanilla. Whip on high for 2–3 minutes until the frosting is light and fluffy.

6. Decorate and Serve

Pipe a generous swirl of frosting onto each cooled brownie cupcake. Top with chopped Reese’s pieces or a drizzle of melted chocolate for a professional finish.

Expert Tips for Success

• Freeze the Candy: Freezing the Reese’s cups ensures they don’t melt into a puddle while the brownie batter bakes around them. You want that distinct layer in the middle!
• Don’t Over-Bake: Brownie batter dries out quickly in cupcake form. Start checking them at 20 minutes; you want the edges set but the top slightly soft.
• The “Liner” Choice: Use high-quality paper or foil liners. Brownie batter is stickier than cake batter, and good liners will ensure they peel away cleanly.
• Heavy Cream for Frosting: If your frosting feels too stiff to pipe, add heavy cream one teaspoon at a time. You want a “cloud-like” consistency that holds its shape.

Variations

• Mini Brownie Bites: Use a mini-muffin tin and mini Reese’s cups for a bite-sized version. Bake for 12–15 minutes.
• Double Chocolate: Stir ½ cup of semi-sweet chocolate chips into the brownie batter before filling the liners.
• Peanut Butter Drizzle: Melt 2 tablespoons of peanut butter in the microwave and drizzle it over the finished frosting for an extra pop of color.
• Salty-Sweet Twist: Top the frosting with a few crushed pretzels to balance the sweetness.

FAQ: Reese’s Peanut Butter Brownie Cupcakes

Q: Can I use homemade brownie batter instead of a box? A: Absolutely. Any standard 8×8 brownie recipe will work perfectly for this.

Q: Why did my Reese’s cup sink to the bottom? A: This usually happens if there wasn’t enough batter placed under the candy. Ensure you have a solid “cushion” of batter at the bottom of the liner first.

Q: How do I store these? A: Store in an airtight container at room temperature for up to 3 days, or in the refrigerator for up to a week. They are actually delicious when eaten cold!

Q: Can I freeze them? A: Yes. These cupcakes freeze beautifully. Thaw at room temperature for an hour before serving for the best texture.