Vegetable Beef Soup

1 lb beef
5 to 6 medium red potatoes
5 celery
5 carrots
1 pkg Beef Stew mix
1 can Beef broth
2 cups water
2 to 3 table spoons of cornstarch
1 can/bottle whole tomatoes

Cut up potatoes, carrots, and celery. Add to crock pot. Brown hamburger on stove. Add to crock pot. Also add the tomatoes. Salt and pepper to taste. On the stove bring to a boil beef stew mix, beef broth and water. Mix 2 to 3 Tbs of cornstarch with a little water add to boiling mixture to thicken. You might want to add more depending on how thick you want it. I always do mine really thick because it thins as it cooks in the crock pot. Let cook 6 hours on high or until all veggies are cooked.