Provided by: Chef Laurent Tourondel
Preheat oven to 450 degrees.
In a small bowl, stir together butter, bread crumbs, Parmigiano-Reggiano, onion, and rosemary, until they come together to form a ball. Season with salt and pepper, and set aside.
Brush the racks of lamb with oil, and season with salt and pepper. Set a sauté pan over medium heat, and add 2 tablespoons olive oil, garlic, and thyme. Sear the lamb, one rack at a time, for 1 minute per side or until golden brown, and transfer to a baking sheet. Roast the racks for 10 minutes, reduce the oven temperature to 350 degrees, and continue cooking until the lamb’s internal temperature reaches 130 degrees (medium-rare; start check-ing after 5 minutes at 350 degrees).
Transfer the racks of lamb to a work surface, and allow to rest for 5 minutes before coating the meat with the breadcrumb mixture. Broil the racks for a few minutes, watching carefully, until the crust turns golden brown.(Published 2004)