❶ Preheat OvenSet oven to 325°F (163°C).❷ Prepare the Herb CrustIn a small bowl, mix olive oil, garlic, rosemary, thyme, parsley, Dijon mustard, lemon zest, salt, and pepper.❸ Season the LambPat the lamb dry and rub the herb mixture all over. Optionally, press breadcrumbs onto the surface for extra crust.❹ RoastingPlace the lamb in a roasting pan and roast for about 3 hours, or until tender and internal temperature reaches:145°F (63°C) for medium-rare160°F (71°C) for medium❺ Rest the MeatLet it rest for 15–20 minutes before slicing.❻ ServeSlice and serve with roasted vegetables or a side of your choice.