1/4 c. butter, melted
1 pkg. Oreo cookies
1 qt. vanilla ice cream
2 (8 oz.) containers Cool Whip

Crush 20 Oreos into medium chunks and set aside. Roll out rest of cookies until fine. Mix butter and 1/2 of the finely crushed Oreos and line a 13 x 9 inch pan with this mixture. Mix ice cream, Cool Whip and chunks of Oreos and pour over crust. Sprinkle with remaining (fine) Oreo crumbs. Garnish with Cool Whip. Keep frozen.