To a 4-quart slow cooker, add prepared beef, broth, carrots, potatoes, celery and onion.
Add oregano, basil, thyme, bay leaf and seasoning salt, to taste.
Cook, on low heat, covered, for about 9 to 10 hours.
About 1 hour before the soup is done, add in green beans, peas and diced tomatoes.
Remove and discard bay leaf.
Serve hot sprinkled with parsley with bread, sandwich and/or salad (See above for links to some good copycat recipes).