1.Preheat oven to 350 degrees. Grease a 13×9 pan, set aside.
2. Mix cake mix, egg whites, 1-6oz yogurt, water and applesauce (or alternate ingredients).
3.Pour batter into the greased 13×9 pan. Bake for 20-30 min.
4. Once the cake has cooled, mix cool whip and yogurt and spread over the top of the cake.
5. Keep refrigerated till ready to serve.