Directions. 1  Preheat oven to 450 degrees. 2  Season lamb racks with salt and pepper; coat each evenly with 3 Tbsp pesto. 3  Roast on baking sheet until about 5 degrees less than desired doneness (about 20 min for medium). 4  Transfer lamb to clean platter; let rest 10 min before slicing.
Preheat the oven to 400 degrees F. Using your hands, rub the lamb all over with the lemon juice. Pat the garlic and rosemary evenly all over the surface of the meat. Season the meat with the salt and pepper and place the lamb in a roasting pan. Place the lamb in the oven and roast for 30 minutes.
1 boneless leg of lamb (about 4 to 5 lbs) 2 tablespoons fresh rosemary 2 tablespoons fresh thyme 2 tablespoons fresh oregano 4 cloves garlic Olive oil Salt & pepper. Preheat the oven to 450ÂºF. While the oven is heating, finely chop the herbs and garlic or use a food processor like we did. 4 to 5 pound boneless leg of lamb, rolled and tied, takes about 30 minutes per pound in a 325 degree oven. This of course depends on the exact size of your lamb and the actual temperature of your oven. Just because you set your oven at 325 doesnât mean it is accurate.