Hamburger Barbecue - cooking recipe

Ingredients

1 lb. lean ground beef
1 onion, diced
3/4 c. ketchup
2 tsp. mustard
1 tsp. vinegar
1 tsp. sugar
salt
pepper

Preparation

Brown the ground beef in a skillet.
Add the remaining ingredients and simmer.
Makes enough for about 7 sandwiches. This can be left in a crock-pot after cooking to keep warm.
This is a great do-ahead for busy workers.
Make this on the weekend and heat in the crock-pot.