Season the raw beef tips with a little salt and pepper.Combine the beef with all the remaining ingredients, except the corn starch, in crockpot and stir.
2, 10.5 oz. cans beef broth, 2 lbs. Stew beef, 4 medium onions, 4 celery stalks, 5 carrots, 2, 8 oz. cans water chestnuts, 1 lb. fresh mushrooms, 1, 16- oz can green beans, 1, 22 oz. can tomatoes, 4 potatoes, Salt and pepper, 2 Tablespoons brown sugar