Add enough powdered sugar to a bowl to dip your hands in
In a medium bowl combine cake mix, cool whip, and egg.
Stir until well mixed.
Dip your hands in the powdered sugar to keep from sticking
Take the dough by spoonfool and roll in your hands to form a ball
Keep applying powdered sugar to your hands as needed
Place on parchment paper lined cookie sheet
Bake 9-12 minutes or until done. (depending on size of your cookies)
Notes
Dough will be very thick and hard to stir. Just keep stirring : ) Keep powdered sugar on you hands to avoid the dough sticking. Cookies will be very soft when removed from oven, but will harden as they cool.