Preheat oven to 350 degrees.
In 13x9-inch baking pan, melt margarine in oven. Sprinkle graham cracker crumbs evenly over margarine; top with apples.
In heavy sauce pan, over medium heat, melt butterscotch chips with sweetened condensed milk. Pour butterscotch mixture evenly over apples. Top with coconut and nuts; press down firmly.
Bake 25 to 30 minutes or until lightly browned. Cool. Chill thoroughly.
Recipe submitted by Ron on 12/28/99