24 Oreos, crushed
1/4 c. butter, melted
1/2 gal. ice cream
8 oz. Cool Whip
1/2 c. butter
1 1/2 sq. unsweetened chocolate
2/3 c. sugar
1 tsp. vanilla
2/3 c. evaporated milk
1/2 tsp. salt

Mix Oreos and 1/4 c. melted butter; spread in 9 x 13 inch pan and freeze until set. Layer ice cream over crust and freeze. Melt 1/2 cup butter and unsweetened chocolate on low heat. Add sugar, vanilla, milk and salt. Bring to a boil and cook until thickened. Cool, pour over frozen ice cream and freeze. Spread Cool Whip topping and freeze.