Sloppy Joes

2 lbs. hamburger
1 onion, chopped
1 cup catsup
2 tsp. brown sugar
2 cans chicken gumbo soup, undiluted
2 T mustard
1 T Worcestershire sauce
2 T vinegar
2 dashes salt, pepper, and chili powder

Brown meat and onions and drain. Add remaining ingredients. Simmer for 30 minutes.