1 med. onion
1/2 green pepper, chopped (optional)
1 lb. ground beef
1 c. raw rice
1 (15 oz.) can tomato sauce
2 c. hot water
1 1/2 tsp. salt
1 tsp. prepared mustard

Brown ground beef, onion, pepper and rice together. Add remaining ingredients and bring to a boil. Cover and simmer 25 minutes. Makes 4 to 5 servings.