1 # Ground beef
2/3 c Chopped onion
1 Tbls Prepared mustard
1 Tbls Catsup
½ tsp Salt
1/8 tsp Pepper
1 10-oz can Condensed Chicken Gumbo Soup
Brown meat, add onion; cook until golden. Stir in remaining ingredients. Simmer over low heat 30 minutes. Spoon from skillet to buns.
Serves 8