Preheat the oven to 350 and line pan with 12 paper liners

For each cupcake cup spread 1 teaspoon of peanutbutter over 2 Oreo cookies and stack them on top of one another

Mix peanut butter and butter. When the butter melts it will soften the Oreos

Place Oreo Stacks into the cupcake lined muffin cups spoon 2 tablespoons of brownie batter over each Oreo stack and let run down side of cookies

Bake for 18-20 minutes until Brownies are cooked through

Let cool completely and serve