Preheat oven to 350°. In a large bowl, combine the cake mix, whipped topping and egg until well blended. Batter will be very sticky.
Drop by tablespoonfulls into confectioners' sugar; roll lightly to coat. Place on ungreased baking sheets. Bake until lightly browned and tops are cracked, 10-12 minutes. Remove to wire racks to cool.
