Diet Coke Sloppy Joes

Serves: 3
WW Points per Serving: 6

1 pound extra lean ground beef
1 medium onion
1 1/2 Tbsp all-purpose flour
1 cup Diet Coke
2/3 cup ketchup
2 Tbsp vinegar
1 Tbsp Worcestershire sauce
2 tsp dry mustard

Brown beef and onion in a large skillet. Drain well. Stir in remaining ingredients.
Mix well. Cover and simmer for 30 minutes.