how long to cook osso bucco style lamb in the oven
1 Preheat the oven to 325Â°. 2  In a large skillet, heat 2 tablespoons of the vegetable oil. 3  Add 4 of the lamb shanks, season with salt and pepper and cook over moderate heat until well browned all over, about 10 minutes.4  Transfer the shanks to a large roasting pan. 5  Repeat with the remaining vegetable oil and shanks. Add the wine, bring to a boil over moderately high heat and simmer for 3 minutes. 2  Add the tomatoes, stock, orange zest, oregano and 2 tablespoons of the parsley and bring to a boil. 3  Pour the mixture over the lamb and cover with foil. 4  Braise in the oven for about 3 hours, or until the lamb shanks are very tender.