1 sm. pkg. chocolate instant pudding
20 chocolate sandwich cookies, crushed
1 1/2 c. chocolate chips
1 c. cold milk
1 (6 oz.) chocolate crumb crust
8 oz. (3 1/2 c.) Cool Whip

Prepare pudding mix with 1 cup milk as directed on package. Fold in whipped topping (Cool Whip). Stir in cookies and chocolate chips. Spoon into pie crust. Freeze until firm, 4 hours or overnight. Let stand at room temperature 10 minutes before serving. Store leftover pie in freezer.