In a large bowl, combine the soup, sour cream, and Bacon & Cheddar Cheese Ball & Dip Mix . Add potatoes, ham, and cheddar cheese; mix well. Pour into a greased 13x9x2” baking dish. Top with Parmesan cheese. Bake uncovered @ 350 degrees for 55-60 minutes or until potatoes are tender. Makes 12-16 servings. * May substitute cream of mushroom, celery, or chicken soup.