Healthy Sloppy Joes
["1 lb. ground sirloin", "1 small onion", "4 oz. no-fat sour cream", "1 Tbsp. dry mustard", "2 Tbsp. flour", "6 Tbsp. catsup"]
["Brown sirloin with onion.", "Add other ingredients.", "Simmer 15 minutes or so.", "Serve open-faced on bread of choice."]
["ground sirloin", "onion", "sour cream", "mustard", "flour", "catsup"]