In an oven-safe pan, brown beef in batches in oil then drain.
Put meat back in pan.
Add onions, tomatoes, broth, tapioca, garlic, parsley, salt, pepper and bay leaf. Bring to a boil.
Cover stew and bake at 350° for 1 hour. Stir in carrots, potatoes and celery. Bake, covered, 1 hour longer or until meat and vegetables are tender.
Stir in desired amount of CBD tincture