Instructions

• Preheat oven to 350°F. Line a 9x13-inch pan with foil and spray the foil with cooking spray.
• In the bowl of a stand mixer fitted with the paddle attachment (or using a handheld mixer), combine the 1 box brownie mix (19.5 oz), 1 stick softened butter, and 1 egg. Beat until all dry mix is incorporated and the batter is thick.
• Press the brownie batter evenly into the bottom of the prepared pan to form a uniform crust.
• Evenly sprinkle the chopped 8 Reese’s Peanut Butter Cups, the 1/2 cup peanut butter chips, and the 1 cup milk chocolate chips over the brownie crust.
• Pour the entire 14-oz can of sweetened condensed milk evenly over the candy pieces, covering as much surface as possible.
• Bake in the preheated oven for 28–30 minutes, until the edges are set and begin to brown and the center is no longer jiggly.
• Remove from the oven and let cool completely in the pan on a rack. Once fully cooled, lift the bars from the pan using the foil and slice into desired-sized bars.