1 pkg. oreo cookies
1 1/2 gal. vanilla ice cream
2 (8 oz.) bowl cool whip
1 tsp. vanilla

Crush cookies (food processor works well) spread 1/2 of crumbs over 9 X 13 pan. Let ice cream and cool whip soften in large bowl, add vanilla and mix well. Spread over crumbs and sprinkle with the rest of crumbs. Keep in freezer. Keeps well.