01 - Preheat your oven to 400°F. Line a baking sheet with parchment paper or aluminum foil for easy cleanup.
02 - Pat the rack of lamb thoroughly dry with paper towels. Season generously all over with kosher salt and freshly ground black pepper. Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Sear the lamb, beginning with the fat side down, until beautifully browned on all sides (approximately 2–3 minutes per side). Transfer the seared lamb to the prepared baking sheet, ensuring the meat side is facing up.
03 - In a small mixing bowl, combine the Dijon mustard, the remaining 1 tablespoon of olive oil, finely minced garlic, chopped fresh rosemary, thyme, parsley, gluten-free breadcrumbs, and lemon zest. Mix thoroughly until a thick, uniform paste is formed.
04 - Evenly brush the prepared herb mixture over the top and sides of the seared lamb rack, gently pressing to ensure it adheres well and forms a cohesive crust.
05 - Roast the lamb in the preheated oven for 18–22 minutes for a medium-rare doneness (target internal temperature: 130°F). Adjust the roasting time as needed for your preferred level of doneness.
06 - Once roasted, remove the lamb from the oven. Loosely tent it with aluminum foil and allow it to rest for 10 minutes. This critical step helps the juices redistribute, ensuring a tender and succulent result.
07 - Carefully carve the lamb rack between the bones to create individual chops. If desired, dot each chop with a small amount of unsalted butter just before serving to enhance richness.