Easy Beef Stew

*2 lbs round steak, cut into 1-inch cubes
*2 cups sliced carrots
*1 cup sliced celery
*2 medium onions, sliced
* 1 can water chestnuts, drained and sliced
*1 can sliced mushrooms, drained
*3 T flour
*1 T sugar
*1 T salt
*1 16-ounce can tomatoes
*1 cup beef broth

Optional,
*1/2 Cauliflower
*1/2 cup peas

Throw it all into a slow cooker or brown the beef with onions.