how long to marinate lamb
1 In a small bowl, combine the honey, mustard, rosemary, ground black pepper, lemon zest and garlic. 2  Mix well and apply to the lamb. 3  Cover and marinate in the refrigerator overnight. 4  Preheat oven to 450 degrees F (230 degrees C). 5  Place lamb on a rack in a roasting pan and sprinkle with salt to taste.