Sloppy Joes - cooking recipe

Ingredients

1 lb. ground chuck round
1 c. chopped onion
3 Tbsp. margarine
2 Tbsp. mustard
1 Tbsp. vinegar
1 Tbsp. sugar
1/2 c. ketchup

Preparation

Saute onions and margarine in skillet.
Add ground round and brown; drain fat (usually this is not needed).
Add rest of the ingredients and cook 15 to 20 minutes.