1headgarlic, cloves separated, peeled, and chopped
1tbspkosher salt
1tbspfreshly ground black pepper
¼-½cupchopped fresh rosemary, to taste
½cupolive oil
1lemon, zested
1.5tbspDijon mustard
Instructions
Dry Brine (minimum of 2 days in advance)
The first step on our lamb prep journey is to dry brine the meat. Since you will be roasting in the oven and not searing in a skillet, I highly suggest dry brining the lamb for several days before you cook to ensure the best meat crust possible. Lamb needs far less salt than cuts of beef, but it can still benefit from early salting and resting uncovered in the fridge a couple days prior to cooking. The dry brining step will help the exterior brown faster, which will be especially helpful given the use of the oven roasting method. Coat racks of lamb with approximately 1 tablespoon of kosher salt. Place lamb on a wire rack and let it rest in fridge for 2 days (minimum 24 hours).
Marinade
In a food processor, add garlic, ¼ to ½ cup of rosemary leaves, ½ cup olive oil, and process until finely chopped.
Remove ingredients from food processor. Add 1.5 tablespoon Dijon mustard, 1 tablespoon of coarse fresh black pepper, 1 teaspoon of kosher salt, and lemon zest from one lemon.
Let marinade combine for at least 30 minutes before adding to the meat. Taste and adjust seasoning if needed; however, watch the salt level since the lamb has already been salted.
Cooking the Lamb
Remove lamb from fridge and coat in the marinade. Let rest for at least 1 hour to get to room temperature.
Preheat the oven to 450 degrees F.
Place the racks of lamb meat side up on a wire rack on top of a large baking sheet.
Roast the lamb for 25 minutes, or until they reach 135-140 degrees internal temperature and the crust looks nicely browned.
Let the lamb rest for at least 15 minutes, and then slice the lamb between the bones for serving.