Ingredients:

1 cup cold milk
1 pkg (4 oz. serving) Chocolate flavor Instant Pudding
1 (8 oz) container Cool Whip
20 chocolate sandwich cookies, crushed
1-1/2 cups "rocks"*
1 graham cracker pie crust
* Rocks = Granola chunks, chocolate chips, peanut butter chips, chopped peanuts, or any combination thereof  

Preparation:

Pour milk into medium bowl. Add pudding mix. Beat with wire whisk untilwell blended. Let stand 5 mins. Fold in whipped topping. Stir 1 cup of the cookies and "rocks" into pudding mix. Spoon into pie crust. Sprinkle with remaining cookies. Freeze until firm, about 4 hours. 

Notes: