– Sear the shanks on each side for at least 2 to 3 minutes. Remove from the pan and set aside. There is no need to add more oil for the next batch..
In the same pan, add the remaining oil and saute the onion, carrots, celery, and garlic.
Cover the pan with aluminum foil and transfer to the oven on the middle rack. Cook covered for 1 ½ to 2 hours or until fork-tender.
2 hrs 20 mins