No Bake Double Good Dessert

I'm pretty sure this is the recipe that a friend brought over for lunch today. It's really, really good. I enjoyed the peanut butter, I even think that doing it mint flavor (replacing the peanut butter with cream cheese, adding mint extract and a few drops of green food coloring) instead of peanut butter would be good too. If it's not the recipe my friend used, I'll post the real recipe when I find it.

20 chocolate sandwich cookies, crushed
1 (8 ounce) package cream cheese, softened
2 cups confectioners' sugar
3/4 cup peanut butter
1 (12 ounce) container frozen whipped topping, thawed

Press crushed cookies into the bottom of a 9x13 inch pan, reserving a few for decoration. In a medium bowl, beat together the cream cheese and confectioners' sugar. Stir in the peanut butter until well blended, then fold in the whipped topping. Spread over the crushed cookie base, sprinkle the remaining cookie chunks on top, and freeze for 1 to 2 hours. Thaw 10 to 15 minutes before cutting and serving. From allrecipes.com