1 c. cold milk
1 pkg. (sm.) instant chocolate pudding
3 1/2 c. (8 oz.) Cool Whip, thawed
20 Oreos, crushed
1 c. chocolate chips ("rocks") (or use mini-chocolate chips, granola, or peanut butter chips)
1 graham cracker crust

Pour milk into a medium bowl. Add pudding mix. Beat with wire whisk until well blended 1 to 2 minutes. Let stand 5 minutes. Fold in whipped topping.

Stir 1 cup of the cookies and the "rocks" into pudding mixture. Spoon into crust. Sprinkle with remaining cookies. Freeze until firm about 4 hours. Or put in refrigerator for a softer, mousse-like dessert.