Preheat oven to 350°.
Place the lemon cake mix, egg and cool-whip in a bowl and mix with a fork or spoon until well blended. Be careful not to over mix.
Freeze the cookies for about 2-3 minutes before you roll them in the powdered sugar.
Roll them in the powdered sugar and place them onto a baking sheet lined with parchment paper or a Silpat.
Bake in a 350° oven for 8-10 minutes.