Ingredients
1
lb lean (at least 80%) ground beef
1
medium onion, chopped (1/2 cup)
1/4
cup chopped celery
1
cup ketchup
1
tablespoon Worcestershire sauce
1
teaspoon ground mustard
1/8
teaspoon pepper
6
hamburger buns, split
Preparation
In 10-inch skillet, cook beef, onion and celery over medium heat 8 to 10 minutes, stirring occasionally, until beef is brown; drain.
Stir in remaining ingredients except buns. Heat to boiling; reduce heat. Simmer uncovered 10 to 15 minutes, stirring occasionally, until vegetables are tender.
Fill buns with beef mixture.
