1 lb. hamburger
3 tbsp. catsup
1 (10 1/2 oz.) can condensed chicken gumbo soup
1 med. chopped onion
3 tbsp. mustard (prepared)

Brown hamburger and onion. Stir in catsup, mustard and soup. Simmer 15 minutes or until mixture thickens slightly. Stirring occasionally. Serve on hamburger buns. 6 servings.