Slice 1/2 to 1-inch slits between each bone of the lamb racks to assure the meat roasts evenly. Season each rack with salt and black pepper on all sides. Heat vegetable oil in skillet over high heat. Brown each lamb rack for 2 to 3 minutes on each side. Transfer lamb racks to the foil-lined baking sheet. Brush each rack with mustard and honey mixture. Sprinkle mint mixture over the top and sides of each rack. Bake in the preheated oven until browned on top and medium rare in the center, about 20 minutes.
Roast Lamb. Medium - 15 minutes per lb (450g). Well done - 20 minutes per lb (450g). Slow Roasting. The times for the slow roasting method are as follows: Cook in Roasting Oven for about 30 minutes, or until beginning to brown, then transfer to the Simmering Oven for double the remaining cooking time.ell done - 20 minutes per lb (450g). Slow Roasting. The times for the slow roasting method are as follows: Cook in Roasting Oven for about 30 minutes, or until beginning to brown, then transfer to the Simmering Oven for double the remaining cooking time.
As always, there are many different recipes for cooking a leg of lamb. Elise cooks her leg of lamb with the bone in by starting at 425 degrees for 20 minutes then turns the oven down to 300Â°F and continues to roast the meat for about 10-12 minutes per pound for medium rare lamb.or beginner cooks, the smaller boneless roast is easier to carve. Besides, it just fit into my 15-inch long roasting pan, and my larger roasting pan is not as photogenic! The steps involved in making this boneless leg of lamb are: 1  Make a âspice-rubâ with garlic, thyme, rosemary, oregano and black pepper.