Stir together 1 ½ cups vanilla wafer crumbs, ½ cup powdered sugar, 1/3 cup Cocoa and 1/3 cup melted butter or margarine in bowl.

Press firmly onto bottom of 9” springform pan.

Melt chocolate chips.

Beat cream cheese in large bowl until fluffy.

Gradually beat in sweetened condensed milk until smooth.

Add melted chips, eggs and vanilla; mix well.

Pour into prepared crust.

Bake 1 hour and 5 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 several hours before serving.