Make the brownie mix according to the package instructions.
Take 2 Oreo cookies at a time and place peanut butter on top of cookies, t
Place the two together and repeat until all cookies are covered with peanut butter and set aside.
Place oreo stacks into the cupcake lined muffin cups.
Spoon 2 tablespoons of brownie batter over each stacked oreos and let it run down the sides of the cookies. If you have left over brownie batter,
Bake separately in a separate baker or muffin tin.
Bake brownies and cookies at 350 degrees, for about 20 minutes. Let them chill entirely.