2 pkgs. (6 serving size) Jello chocolate instant pudding
2 c. cold milk
1 (12 oz.) thawed whipped topping
20 chocolate sandwich cookies, ground
9-12 inch crumb crust

2 cups of combination (rocks) :

Chocolate chips
Peanut butter chips
Chopped peanuts or granola bar chunks

Prepare pudding with milk as directed. Fold in whipped topping. Stir in 1 cup cookies and "rocks". Spoon into crust. Sprinkle with remaining cookies. Freeze for 4 hours or overnight. Thaw 10 minutes before serving.