Banana Split Dessert
["1 box crushed vanilla wafers", "sliced banana", "1 qt. vanilla ice cream", "chopped nuts", "1/2 c. chocolate chips", "1/2 c. margarine", "3/4 c. evaporated milk", "1 c. powdered sugar", "1 tsp. vanilla", "Cool Whip"]
["Layer in a 9 x 13-inch pan."]
["vanilla wafers", "banana", "vanilla ice cream", "nuts", "chocolate chips", "margarine", "milk", "powdered sugar", "vanilla"]