1Place onions in 3 1/2- to 4-quart slow cooker. Arrange beef on onions, overlapping to fit if needed. Sprinkle gravy mix (dry) over beef. Pour vegetable juice over all. Place celery on top.
2Cover and cook on low heat setting 8 to 10 hours.
3About 15 minutes before serving, cook noodles as directed on package. Serve sauce, vegetables and beef over noodles.