Preheat oven to 350°F. Spray a baking sheet with non-stick cooking spray and set aside.
In a large mixing bowl, beat together strawberry cake mix, Cool Whip, and egg until mixed.
Scoop even balls of dough (a heaping 1 tablespoon) using a cookie scoop or measuring spoon. Drop the balls into powdered sugar.
Roll in the powdered sugar -it is easier to roll into balls with your hands once they have a coating of powdered sugar.
Place the balls 1 ½ inches apart on prepared cookie sheet.
Bake for 8-9 minutes or until the cookies are evenly spread. They may just be starting to brown on the bottom/edges, but you do not want too much color on the top.