Roast Beef

1 large roast beef
1 can stewed tomatoes
3-4 potatoes
1 1/2 c. carrots
1 small onion (opt.)

*Add everything to the crock pot and cook 4-6 hrs on high or 6-8 hrs on low. When done either pull apart roast with two forks, or remove roast, slice and serve with sides out of crock pot.