Healthy Sloppy Joes

Ingredients

• 1 lb ground sirloin
• 1 small onion
• 4 oz no-fat sour cream
• 1 Tbsp dry mustard
• 2 Tbsp flour
• 6 Tbsp catsup

Directions

1. Brown sirloin with onion
2. Add other ingredients
3. Simmer 15 minutes or so
4. Serve open-faced on bread of choice