Preheat oven to 350°. In a large skillet, cook beef over medium heat until no longer pink; drain and set aside. , In same skillet, saute potatoes, celery, carrots, green pepper and onion in butter 5 minutes. Add water; cover and simmer 10 minutes or until vegetables are tender. Stir in soup and cooked ground beef until blended. , Sprinkle half the chow mein noodles into a greased shallow 2-qt. baking dish. Spoon meat mixture over noodles. Cover and bake 20 minutes. Top with cheese and remaining noodles. Bake, uncovered, 10 minutes longer or until heated through.