1 lb. pkg. Oreos, crushed
1/2 gallon vanilla ice cream, softened
1 (12 oz.) Cool Whip, softened
1/2 c. melted butter
1 (12 oz.) jar hot fudge, warm
Chopped nuts

In a 9x13 inch pan, spread Oreos and mix with butter. Pat firmly. Spread ice cream over crumbs and put into freezer until firm. Spread warm fudge sauce over ice cream layer and smooth Cool Whip carefully over fudge layer. Sprinkle with nuts. Freeze. Cut and serve.