Melt margarine in 13-by-9-inch pan in a preheated 350-degree oven (325 degrees for glass pan). Sprinkle crumbs over margarine; pour sweetened condensed milk evenly over crumbs. Top with almond brickle chips, chocolate morsels and chopped nuts; press down firmly. Bake until lightly browned, 20 to 25 minutes. Let cool; chill if desired. Cut into bars. Store, covered, at room temperature.