Instructions: For crust: In a medium bowl, stir together wafer crumbs, powdered sugar, cocoa and melted butter or margarine. Press firmly onto bottom of 9 inch springform pan. Set aside.

For filling: Preheat oven to 300 degrees.

In a microwave-safe bowl, place chocolate chips. Microwave at high for 1 1/2 minutes, stir. If necessary, microwave at high an additional 15 seconds at a time, stirring after each heating, just until chips are melted and smooth when stirred.

In a large mixer bowl, beat softened cream cheese until fluffy. Gradually beat in sweetened condensed milk until smooth. Add melted chocolate, eggs and vanilla; mix well. Pour into prepared crust. Bake 65 minutes or until center is set.

Remove from oven to wire rack. With knife, loosen cake from side of pan. Cool completely, remove side of pan.

Refrigerate before serving. Garnish with coated chocolate truffles, if desired. Cover and refrigerate leftover cheesecake.

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