Frozen Chocolate Dessert
["24 oreo cookies", "1 stick margarine, melted", "1/2 gal. vanilla ice cream, softened", "1 container (8 oz.) Cool Whip", "1 Baker's German sweet chocolate bar", "2/3 c. sugar", "2/3 c. evaporated milk", "1/8 tsp. salt", "1 stick margarine"]
["Crush cookies in blender or food processor.", "Reserve some cookie crumbs for garnish.", "Put remaining crumbs in 9 x 13 pan and drizzle with melted margarine.", "Let set in freezer.", "Cover with softened ice cream.", "Freeze."]
["oreo cookies", "margarine", "vanilla ice cream", "sweet chocolate", "sugar", "milk", "salt", "margarine"]