HAMBURGER AND TOMATO GRAVY

1 (#2) can tomatoes
2 onions, sliced thin
1 tsp. sugar
1 tsp. salt
1/4 tsp. pepper
1 bay leaf
1/2 tsp. chili powder
1/2 c. diced celery; optional
1 lb. hamburger meat

Brown and cook hamburger patties. Set patties aside and add tomatoes, onions and rest of ingredients. Put patties back into mixture and simmer for 30 minutes. Serve with mashed potatoes.