1 regular pack of Oreos
1/2 gallon ice cream (I use chocolate chips)
1 regular container Cool Whip
Chocolate sauce
2 tbsp. butter

Crush Oreos and add melted butter. Cover bottom of 9"x12" cake pan with cookie crumbs leaving some to sprinkle on top later. Spread softened ice cream. Add some chocolate sauce on top. Then spread Cool Whip and more chocolate sauce on top again. Sprinkle with leftover cookie crumbs to decorate. Freeze overnight, cut and serve. Use different kinds of cookies, ice cream and sauces for variety.