Unbaked Chocolate Cheesecake

Crust:
1/2 cup butter, melted
2 cups chocolate wafer crumbs

Filling:
1 package (8 oz.) cream cheese, softened
1/2 cup sugar
2 large eggs, separated
1 teaspoon vanilla
6 squares semi-sweet chocolate, melted
1 cup whipping cream

Crust:
Combine butter and chocolate wafer crumbs. Press into the bottom and up the sides of a 9" springform pan.

Filling:
In a large mixer bowl, beat cream cheese with sugar until smooth. Beat in egg yolk and vanilla, and then the melted chocolate.

Whip cream and fold into the chocolate mixture. Beat egg whites until stiff but not dry. Fold into the chocolate mixture. Pour over crust.

Chill at least 4 hours before serving.