how long to cook a boneless lamb leg
Preheat oven to 425 degrees F. Roast lamb in middle of oven for 20 minutes, reduce heat to 350, and cook until an instant-read thermometer inserted 2 inches into thickest part of meat (not touching bone) registers 135 degrees F, about 1 3/4 hours.oast lamb in middle of oven for 20 minutes, reduce heat to 350, and cook until an instant-read thermometer inserted 2 inches into thickest part of meat (not touching bone) registers 135 degrees F, about 1 3/4 hours.