1 lb. Oreo cookies, crushed
1/3 c. melted butter
1/2 gal. vanilla ice cream, softened
1 jar fudge topping
1 (8 oz.) container Cool Whip

Combine cookie crumbs and melted butter in bowl. Mix well. Spread in 9 x 13 inch pan. Spread softened ice cream over crust. Top with fudge topping. Spread whipped topping over top. Freeze until firm.