All you do is buy a tube of Pillsbury peanut butter cookie dough, form it into 1" balls, place those balls into greased mini-muffin pan cups, spread them over the bottom and the sides of each cup, bake for about 10 minutes in a 350 degree oven, and insert a mini Reese's peanut butter cup. Allow the cookies to cool all of the way and potentially place them in the fridge before you remove them from the tray so they have a chance to set up. These cookies are also a delicious excuse to eat peanut butter cups.
I made some blueberry cheesecake bars which tasted good, but were impossible to get out of the pan without destroying them. I need to try again in the future to see if I can make them more functional.