1 1/2 c. finely crushed chocolate wafers
1/2 c. softened butter

Press in bottom of 9 inch spring form pan. Bake 10 minutes at 325 degrees.

FILLING:

8 oz. cream cheese
1/4 c. sugar
1 tsp. vanilla

Stir in 2 beaten egg yolks. Mix in 6 oz. semi sweet chocolate melted. Beat 2 egg whites, beat in 1/4 cup sugar. Fold in chocolate mixture. Beat 1 package Dream Whip according to directions fold into mixture. Add 3/4 cup chopped nuts. Pour into pie crust. Cover with foil and freeze.