Salisbury Steak

This is a favorite comfort food of my family. I hope you and your family like it as well.
1 (10.5) ouce can condensed French Onion Soup
1 ½ lb ground beef
½ c dry bread crumbs
1 egg
¼ tsp salt
1/8 tsp pepper
1 T all-purpose flour
¼ C ketchup
1 ½ C water
1 T Worcestershire Sauce
½ tsp mustard powder
1 pkt brown gravy mix
Directions:
1. In a large bowl, mix together 1/3 cup condensed French Onion Soup, ground beef, bread crumbs, egg, salt and pepper. Form into 6 oval shaped patties.
2. In a large skillet over medium high heat, brown patties and set aside. Pour off excess fat.
3. In a small bowl, mix remaining ingredients until smooth. Pour over meat in skillet. Cover and cook for additional 20 minutes, stirring occasionally.
Note: You may want to adjust amount of water depending on how strong you like your gravy.