Sloppy Joes - cooking recipe

Ingredients

1 lb. hamburger
1/2 c. diced onions
1 Tbsp. mustard
1 Tbsp. brown sugar
3/4 c. ketchup
2 Tbsp. flour

Preparation

Brown hamburger and onions.
Add remaining ingredients. Simmer for 20 minutes.
Serve on buns.