Reese's Pieces Brownies Recipe

4.80 from 15 votes

Homemade Reese’s Pieces Brownies with thick, rich peanut butter frosting. A special treat for chocolate and peanut butter lovers!

Prep Time15

Cook Time30

Total Time45

Course: Dessert

Cuisine: American

Servings: servings

Calories: 574kcal

Preheat the oven to 350ºF and lightly grease a 9 x 13-inch pan.
In a saucepan over low heat, melt the butter, then add the sugar and stir to combine. Heat just until the mixture is hot, but don't let it bubble. Watch for it to start looking shiny as you stir it. 1 cup unsalted butter, 2 1/4 cups granulated sugar
In a stand mixer, beat the 4 eggs with the cocoa, salt, baking powder, and vanilla until smooth. Add the hot butter & sugar mixture to the egg & cocoa mixture, stirring until smooth. 4 large eggs, 1 1/4 cups cocoa powder, 1 teaspoon salt, 1 teaspoon baking powder, 1 tablespoon vanilla extract,
Add the flour and chocolate chips, again stirring until smooth. If you don't want your chocolate chips to melt, let the mixture cool off for about 15 minutes before adding in the chocolate chips. 1 1/2 cups all-purpose flour, 2 cups mini chocolate chips
Pour the batter into the prepared pan and spread it evenly. Bake for about 30 minutes or until the edges of the brownies look set and the center is slightly puffy.
In a stand mixer, beat together the peanut butter and butter for 2 minutes with the whip attachment. Add in the powdered sugar and beat for an additional 2 minutes, adding milk in if the frosting is not at spreading consistency. 1 cup creamy peanut butter, 1 cup salted butter, 3 cups powdered sugar, 3 tablespoons 2% milk
After the brownies have cooled, spread on the icing, as generously as you like. Sprinkle on the Reese's candy. 1/2 cup Reese's Pieces candy

This recipe works well with King Arthur all-purpose gluten free flour.
Store leftover brownies in an airtight container at room temperature for up to 3 days. The brownies freeze well too.
To easily remove the brownies for clean cuts, line the baking pan with parchment paper before adding the batter.
Use a plastic knife to cut brownies for clean cuts.
The calories shown are based on the brownies being cut into 20 pieces and
all of the frosting used, with 1 serving being 1 frosted brownie. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate.