1 1/2 c. graham cracker crumbs
1/3 c. Hershey's cocoa
1/3 c. sugar
1/3 c. butter, melted
3 (8 oz.) pkgs. cream cheese, softened
1 (14 oz.) can Eagle Brand sweetened condensed milk (not evaporated milk)
3 eggs
2 tsp. vanilla extract
1 tsp. all-purpose flour
1 c. Hershey's semi-sweet mini chips, divided

Heat oven to 300 degrees. In bowl, combine graham cracker crumbs, cocoa, sugar and butter; press evenly on bottom of 9 inch springform pan. In large mixer bowl, beat cream cheese until fluffy. Gradually add sweetened condensed milk, beating until smooth. Add eggs and vanilla; mix well. In small bowl, toss 1/2 cup mini chips with flour to coat; stir into cheese mixture. Pour into prepared pan. Sprinkle remaining chips evenly over top. Bake 1 hour. Turn oven off; allow to cool in oven 1 hour. Remove from oven. Cool in room temperature. Refrigerate.