Preheat oven according to directions on cookie package.
Slice the prepared cookie mix and press each slice into a greased muffin pan to form a cup. Bake for 7 minutes.
Remove muffin pan from oven when cups are rising. Take a small spoon and deflate the centers of the cups while leaving the sides of the cookie cup untouched. Put back in the oven and bake for another 5 minutes.
Again, remove from oven and with a small spoon, deflate the centers of the cups while leaving the sides of the cookie cup untouched. Carefully place a Reese’s Peanut Butter Cup at the bottom of each cookie cup.
Place back in the oven again and finish baking until the cookie cups are golden brown (about 2 minutes). Remove from oven and let cool completely before removing from the pan.
In a mixing bowl, beat cream cheese, powdered sugar and peanut butter together with a mixer until light and fluffy.
Place cream cheese mixture into a piping back and pipe the mixture into the cooled cookie cups with a decorative tip.
Cool in the refrigerator until ready to serve. When ready to serve, drizzle chocolate topping over the cookie cups.