1. Preheat oven to 325°F. Melt margarine in 9" x 13" pan.
2. Sprinkle graham cracker crumbs evenly over margarine to cover the bottom of the pan. Layer raisins, peanuts, chocolate chips, and peanut butter chips in the pan. Pour can of sweetened condensed milk evenly over ingredients in pan.
3. Bake 30 minutes. Cool; cut into bars and serve.