10 1⁄2 oz can Campbell’s French onion soup 1 1⁄2 lb ground beef 1⁄2 cup dry bread crumbs 1 egg 1⁄4 tsp salt 1⁄8 tsp black pepper, ground, to taste 1 tbsp all-purpose flour 1⁄4 cup ketchup 1 tsp (up to 3) worchestershire sauce, to taste 1⁄2 tsp mustard powder water In a