Dessert

Reese’s Stuffed Brownies Recipe

ByThomas Greene January 18, 2026January 18, 2026

Introduction

These Reese’s Stuffed Brownies combine rich chocolate and creamy peanut butter in a deliciously indulgent treat. Packed with peanut butter cups inside and topped with a fluffy peanut butter frosting and chocolate drizzle, they’re perfect for satisfying any sweet tooth.

This image shows several square pieces of chocolate dessert placed on brown parchment paper over a white marbled surface. Each piece has three distinct layers: a dark brown, moist chocolate base at the bottom, a middle layer of lighter brown peanut butter filling, and a top layer of light beige creamy frosting. The frosting layer is decorated with thin, dark chocolate drizzle lines running diagonally across the squares. One piece is tilted to display its layered interior clearly in the center, adding texture contrast and depth to the image. Photo taken with an iphone --ar 4:5 --v 7

Ingredients

1 Pillsbury family size brownie mix (19.5 ounces)
1 large egg
4 ounces cream cheese (softened)
1/4 cup salted butter (softened)
16 full-size Reese’s peanut butter cups (frozen)
1/2 cup salted butter (softened)
1 cup creamy peanut butter
3 tablespoons 2% milk
2 cups powdered sugar
2 ounces semi-sweet chocolate

Instructions

Step 1: Preheat the oven to 350ºF. Line an 8×8″ baking pan with parchment paper or spray it lightly with cooking spray.
Step 2: In the bowl of a stand mixer or using an electric mixer, combine the brownie mix, egg, softened cream cheese, and 1/4 cup softened butter. Mix until well combined, scraping the sides as needed. The batter will be thick. Spread this mixture evenly into the prepared pan.
Step 3: Press the frozen Reese’s peanut butter cups into the batter in a 4×4 grid. Press them so the tops are level with the batter. Bake for about 28 minutes until set.
Step 4: While the brownies bake, make the peanut butter frosting. In a stand mixer, blend 1/2 cup softened butter, peanut butter, powdered sugar, and milk for 2-3 minutes until light and fluffy.
Step 5: Allow the brownies to cool completely, then spread the peanut butter frosting evenly on top.
Step 6: Melt the semi-sweet chocolate in a microwave-safe bowl in 15-second intervals, stirring in between to prevent burning. Drizzle the melted chocolate over the frosting and let set before serving.

Tips & Variations

Freeze the peanut butter cups before baking to help them hold their shape and prevent melting into the batter.
For a nut-free version, substitute the peanut butter cups and peanut butter with allergy-friendly alternatives.
If you prefer a thicker frosting, add a little more powdered sugar or reduce the milk slightly.

Storage

Store the brownies in an airtight container at room temperature for up to 3 days or refrigerate for up to a week. For best flavor, bring refrigerated brownies to room temperature before serving. The frosting and chocolate drizzle will keep well, but avoid freezing to maintain texture.

How to Serve

A close-up top view of a set of sixteen square dessert bars arranged in a 4x4 grid on crumpled brown parchment paper. Each bar has two visible layers: a bottom darker chocolate layer and a thicker, creamy light tan top layer with a smooth, swirled texture. The top is decorated with thin, irregular drizzles and some larger dollops of dark chocolate, creating a contrast against the tan frosting. The bark has uneven edges and a few broken pieces. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use homemade brownie batter instead of the mix?

Yes, you can substitute the boxed brownie mix with your favorite homemade recipe. Just prepare the batter as usual and follow the same layering and baking steps.

Do the peanut butter cups melt completely inside the brownies?

Because the peanut butter cups are frozen before baking, they soften but retain their shape rather than melting fully, giving each bite a delightful peanut butter center.