In a large bowl, mix the first 4 ingredients (beef through thyme). Form meat mixture into meatballs.
In a large skillet over medium heat, heat coconut oil. To the oil, add the meatballs and cook on each side for 2 minutes, until brown. To the meatballs, add the mushrooms, celery and cauliflower.
In a large bowl, mix the remaining ingredients (coconut cream through green onion). Pour sauce over meatballs and simmer for 10 minutes, until meatballs are no longer pink in the center and vegetables are tender. Serve warm.