1. Mix together the ingredients for the spice rub and massage into the roast.
2. Heat the coconut oil in a large skillet over medium-high heat.
3. Add the roast to the pan and let sear for 5 minutes.
4. Flip and repeat with the other side.
5. Transfer the roast to the slow cooker.
6. Add the carrots, onion, garlic, and celery to the slow cooker.
7. Pour in the broth.
8. Turn the heat on to low and cook for 6-7 hours, until the meat is tender.
9. Serve hot sprinkled with chopped parsley.