Souperburger Sandwiches

Campbell's version of sloppy joes, but I think better!  I never really cared for sloppy joes.  I don't know if it is the spices or what, but I love Campbell's version.

1 lb. ground beef
1 medium onion, chopped (or onion soup mix)
1 can (10.75 oz.) Campbell's Condensed Cream of Celery Soup
1 tbsp. prepared mustard
1/8 tsp. pepper
6 round sandwich rolls or hamburger rolls, split and toasted

1.  In a skillet over medium-high heat, cook beef and onion until beef is browned, stirring to separate meat.  Pour off fat.
2.  Add soup, (soup mix), mustard and pepper.  Over low heat, heat through.  Divide meat mixture among 6 rolls.

6 sandwiches