Rosemary, Thyme & Garlic Grilled Roasted Rack of Lamb
This Rosemary, Thyme & Garlic Rack of Lamb is inspired by the lamb dinners you fell in love with in Australia—beautifully Frenched rib racks cooked to tender, juicy perfection. Each rack is marinated with a simple but intensely aromatic rub of fresh rosemary, thyme, garlic, salt, pepper, and extra virgin olive oil. The result is a crisp, herb-scented crust and blushing pink interior. You can grill the racks over moderate heat for a smoky, char-kissed finish or oven-roast them hot and fast and then gently to your desired doneness. At RizzieFarms, we favor rare to medium-rare and love serving these chops with garlic mashed potatoes and fresh garden greens for a special-occasion farm feast.
Servings: 1–2 racks (serves 2–6, depending on number of racks)
Total Time: 140 min
Ingredients
Lamb
1 or more Frenched lamb rib racks with 7–8 ribs each (1 1/4–2 lb per rack; figure each rack serves 2–3 people)
Herb Rub (Per Rack)
2 tsp chopped fresh rosemary (per rack)
1 tsp chopped fresh thyme (per rack)
2 cloves garlic, minced (per rack)
Salt, to taste (per rack)
Freshly ground black pepper, to taste (per rack)
2 tbsp extra virgin olive oil (per rack)
Instructions
Prepare the herb rub: For each **Frenched lamb rack (1 1/4–2 lb, 7–8 ribs)**, combine **2 tsp chopped fresh rosemary**, **1 tsp chopped fresh thyme**, **2 minced garlic cloves**, **salt**, **black pepper**, and **2 tbsp extra virgin olive oil** in a bowl or directly in a sealable plastic bag, mixing until the herbs and garlic are evenly coated in the olive oil.
Marinate the lamb: Place **1 or more Frenched lamb racks** into the bag with the herb rub, turning to coat each rack with the mixture of **2 tsp rosemary**, **1 tsp thyme**, **2 cloves garlic**, **salt**, **pepper**, and **2 tbsp olive oil** per rack. Press out as much air as possible and seal. Marinate in the refrigerator overnight, or marinate at room temperature for **1 1/2–2 hours** as the lamb comes toward room temperature.
Bring lamb to room temperature: If chilled, remove the **herb-rubbed lamb racks** from the refrigerator **1 1/2–2 hours** before cooking so the meat coated with **rosemary, thyme, garlic, salt, pepper, and olive oil** comes to room temperature. This helps the racks cook more evenly, preventing an overcooked exterior and raw interior.
Grilling option – Prepare the grill: Preheat the grill to moderate heat, about **450°F**, and have the **herb-rubbed lamb racks** ready with the **rosemary, thyme, garlic, salt, pepper, and olive oil** coating still on the meat. Wrap the exposed bones of each rack in foil so they do not burn.
Grill the lamb: Place each **Frenched lamb rack (1 1/4–2 lb)** on the grill, meat side down, about 4 inches above the heat. Grill about **8–12 minutes per side**, keeping the **herb and garlic rub** in contact with the heat to develop color, until an instant-read thermometer inserted into the thickest part of the meat registers **135°F for medium-rare** or **145°F for medium**. Remove the racks from the grill, tent loosely with foil, and let rest **15 minutes** before slicing.
Oven roasting option – Preheat the oven: Preheat the oven to **450°F** and arrange the oven rack so the **herb-rubbed lamb racks** will sit in the middle of the oven. Keep the **rosemary, thyme, garlic, salt, pepper, and olive oil** rub on the meat.
Score the fat and season: Place each **Frenched lamb rack (1 1/4–2 lb)** on a cutting board, fat side up. Using a sharp knife, score the fat cap with shallow cuts spaced about 1 inch apart, taking care not to cut into the meat. Sprinkle the fat lightly with additional **salt** and **pepper** if desired, on top of the existing **rosemary, thyme, garlic, and olive oil** rub. Wrap the exposed bones in foil.
Roast at high heat: Place the **herb-rubbed, scored lamb racks** bone side down (fat side up) on a foil-lined roasting pan. Roast at **450°F** for about **10 minutes** (slightly longer if roasting more than one rack) until the surface of the lamb with its **rosemary, thyme, garlic, salt, pepper, and olive oil** coating is nicely browned.
Lower heat to finish: Reduce the oven temperature to **300°F**. Continue roasting the **Frenched lamb racks** for **10–20 minutes**, depending on thickness and number of racks, until a meat thermometer inserted into the thickest part of the meat reads **125°F for rare**, **135°F for medium-rare**, or **145°F for medium**. Remove the racks from the oven, tent with foil, and let rest **15 minutes** before slicing.
Slice and serve: After resting, place each **1 1/4–2 lb lamb rack** on a cutting board and slice between the bones to separate the chops, keeping the **herb, garlic, and olive oil crust** intact. Serve **2–3 chops per person**, paired with sides like garlic mashed potatoes and fresh garden greens.
Notes
Use a meat thermometer—shapes, fat marbling, grill type, and oven calibration all affect cooking time. Pull the lamb as soon as it hits your target temperature (125°F for rare, 135°F for medium-rare, 145°F for medium).
Because each rack weighs about 1 1/4–2 lb and serves 2–3 people, adjust the number of racks and the herb rub quantities (2 tsp rosemary, 1 tsp thyme, 2 cloves garlic, 2 tbsp olive oil per rack) based on your guest count.
Letting the lamb rest for at least 15 minutes after grilling or roasting allows the juices redistributed through the rosemary, thyme, garlic, and olive oil to settle, resulting in a juicier, more tender chop.
If you prefer a stronger herb presence, add extra chopped rosemary and thyme to the rub or sprinkle a little more on right after cooking while the lamb is resting.