Kim Knapp'S Buster-Bar Ice Cream Cake
["1/2 lb. crushed Oreos", "1/4 c. melted margarine"]
["Mix together and press into bottom of a 9 x 13-inch pan. Spread 1/2 gallon ice cream over chilled crust.", "Sprinkle with 1 1/2 cups chopped nuts."]
["Oreos", "margarine"]