1 box yellow cake mix
1/2 c. butter
8 oz. cream cheese
4 egg whites
1 box powdered sugar
1/2 tsp. vanilla

Preheat oven 350 degrees. Grease 9x13 pan.

Mix cake mix and butter. Set aside 1/2 cup of mixture, spread remaining mix n pan. Mix cream cheese, egg whites and powdered sugar on high for 4 minutes. Place remaining mix on top. Bake in 350 degree oven for 30 minutes or until top is brown. Sprinkle with powdered sugar and cut into squares. Serves 36 bars.