Chocolate Chip Cheesecake - cooking recipe

Ingredients

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

Preparation

*Or 18 finely crushed Oreos.