1 1/2 c. graham cracker crumbs
4 tbsp. sugar
1/4 lb. (1 stick) butter
3 (8 oz.) cream cheese bars
1 c. sugar
5 eggs, separated whites
1 pt. sour cream
1 1/2 tsp. vanilla

Preheat oven to 350°F. Melt butter; add sugar and graham cracker crumbs. Mix and line spring-form pan for crust. Room temperature cream cheese; sour cream leave out several hours before mixing. Beat cream cheese, sour cream, sugar, egg yolks and vanilla.

In separate bowl, beat egg whites until light and fluffy with peaks. Fold whites into cheese mixture and pour into spring-form pan.

Bake at 350°F for 1/2 hour. Shut off oven; don't open door. Leave in one hour. You can use light cheeses; works well.

Serves 12.