Frozen Chocolate Crunch Pie

1 pk Instant chocolate pudding

1 c Cold milk

3 1/2 c Cool whip (8 oz.)

20 Oreos

1 1/2 c -- ?

1 " rocks" * see below

1 Chocolate crumb crust

*"Rocks"--any combination of chocolate chips, peanut butter chips, chopped peanuts or pecans, granola bar chunks, butterfinger candy bars, crushed. Prepare pudding mix with 1 cup milk as directed on pkg. Fold in Cool Whip. Stir 1 cup cookies, crushed finely, and the "rocks" into pudding mixture. Spoon into pie crust. Sprinkle with remaining cookies. Freeze until firm, 4 hours or overnight. Let stand at room temperature for 10 minutes before serving. Store any leftover pie in freezer.