Tennessee Hamburger Stew

1 pound ground beef
1 tablespoon margarine
1 onion, sliced
1 1/2 teaspoons salt
1/4 teaspoon pepper
1 tablespoon steak sauce
1 (19 ounce) can tomatoes
3 medium potatoes, pared and sliced
3 medium carrots, scraped and
    thickly sliced
2 stalks celery, diced
4 split hot biscuits

Brown beef lightly in margarine, stirring with fork to break up meat. Add onion; cook 5 minutes longer. Add remaining ingredients, except hot biscuits; bring to boil. Reduce heat; simmer, covered, 30 minutes or until vegetables are tender.

Serve on biscuits.