Prepare brownie mix according to box instructions. In a medium mixing bowl, combine together the peanut butter, powdered sugar, and melted butter. Distribute scoops of the peanut butter mixture on top of the brownie and flatten the mixture to achieve an even layer. In a small bowl, combine the milk chocolate chips and butter.
Microwave at 15-second intervals until melted, stirring after each interval. Pour the chocolate mixture on top of the brownies, then evenly spread to achieve a flat, even layer. Chill in the refrigerator for 30 minutes. Enjoy!
[Recipe From Tasty]
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