This oven-roasted rack of lamb, dressed with a simple garlic and rosemary marinade, makes an elegant centerpiece for any special meal. The exterior develops a deep caramelized crust while the interior stays juicy and medium-rare, with a tender pink center. Below you’ll also find an easy pan gravy made from the drippings to finish the dish.
The rack of lamb is a premium cut for a reason: it is flavorful, impressive, and surprisingly simple to prepare. With a straightforward garlic-herb marinade, a quick sear for color and flavor, and a short time in the oven, you get tender, juicy meat and flavorful pan juices to transform into gravy.
This recipe is one we return to every Easter and for other gatherings. It’s ideal for serving a crowd—two or three racks can roast together—takes only minutes in the oven, and creates a beautiful focal point on the table. If lamb feels intimidating, don’t worry: with a few practical tips and a meat thermometer, it’s hard to overcook this cut.
Ingredients
Most of these are pantry staples—keep it simple so the lamb remains the star.
- Lamb – 1.5–2 lb frenched rack of lamb (see notes on Frenching below)
- Rosemary – fresh, chopped (dried rosemary won’t offer the same brightness)
- Garlic – minced for the marinade, plus whole crushed cloves for basting
- Olive oil – helps the marinade, prevents the butter from burning
- Butter – for basting and adding richness
- Salt & Pepper – coarse salt and freshly ground pepper for best flavor
Choosing Rack of Lamb
The rack is the rib section with loin meat attached, usually sold with 8–9 ribs. It commonly has a fat cap and some meat left on the rib tips.
Frenched rack – Frenching trims the fat cap and cleans the rib bones so the bones are exposed and the presentation is cleaner. It is worth paying a little extra for a frenched rack, or you can ask your butcher to do it. If you buy an unfrenched rack, you can trim off excess fat yourself and save it for rendering—lamb fat adds great flavor to other dishes.
I prefer a frenched rack because a heavy fat cap can remain leathery if not rendered well. If you use an unfrenched rack, cooking steps are similar but you may need to adjust searing and roasting times to render the fat properly.
Less Is More with the Marinade
A simple garlic-rosemary marinade enhances the lamb without masking its natural flavor. After coating the meat, refrigerate for at least 4 hours and up to 2 days so the flavors have time to penetrate. Marinate in a sealed container or a zip-top bag and turn occasionally to coat evenly. Remove the lamb from the refrigerator about two hours before cooking so it comes to room temperature for even cooking.
Baking the Lamb Rack
Prep the rack: Optionally wrap foil around the exposed rib tips before searing to keep them clean and prevent charring; this is mainly for presentation. If you forget, it’s fine to wrap them after searing but be careful handling hot bones.
Sear and baste: A quick sear builds a deep brown crust and develops flavor. Heat a skillet over medium-high heat, add a little oil, and sear the rack for about 1 minute per side and around the edges. At the end of searing, add 2 tablespoons of butter, a couple of sprigs of rosemary, and whole crushed garlic. Tilt the pan and spoon the melted butter over the lamb for 1–2 minutes to baste and form a glossy crust.
Bake: Preheat the oven to 180°C / 350°F. Transfer the seared rack to a wire rack set over a baking sheet, spoon a teaspoon or two of the butter from the pan onto the meat, and roast for about 12–15 minutes. Use a meat thermometer to check doneness—target 57°C / 135°F for medium-rare. The meat will rise a few degrees as it rests, so avoid overcooking in the oven.
Rest: Resting is essential. Loosely tent the lamb with foil and let it rest for 7–10 minutes (at minimum 5 minutes if short on time). Resting allows the juices to redistribute and collects pan juices for the gravy.
Make Gravy to Serve with the Rack
A silky pan gravy completes the plate, especially when serving with mashed potatoes, rice or roasted vegetables.
- Remove garlic, rosemary and any burnt bits from the pan (these can make the sauce bitter). Leave the butter and fond (browned bits) in the skillet.
- Transfer the lamb to a cutting board. Pour about 1 cup of beef stock into the baking sheet beneath the rack and scrape to deglaze and lift the brown bits.
- In your skillet, add 1–2 tablespoons of butter, a fresh sprig of rosemary and crushed garlic and sauté briefly until fragrant. Add the deglazed stock and simmer for a minute or two.
- Thicken with a cornstarch slurry (about 1 tablespoon cornstarch mixed with 2 tablespoons water), stirring until the gravy coats the spoon. For extra smoothness, strain the gravy.
What to Serve With Baked Lamb Rack
This lamb pairs beautifully with a simple starch and a vegetable. Think buttery mashed potatoes, garlic-butter rice, roasted or hasselback potatoes, scalloped potatoes, or roasted carrots. A crisp green salad or lightly dressed greens adds freshness and balance.
Storing Leftovers
Store an uncarved rack if possible and slice only what you need for serving. Refrigerate leftovers for up to three days. Reheating can dry the meat, so take it to room temperature before serving and reheat gently if necessary.
More Lamb Recipes
Baked Rack of Lamb
Course: Main Course
Cuisine: American
Prep Time: 10 mins | Cook Time: 35 mins | Marinating: 2 hrs (or longer)
This garlic-and-rosemary marinade highlights the natural flavor of the lamb. Searing before roasting creates a deeply caramelized crust while the oven finishes the cooking to a perfect medium-rare.
Servings: 4
Ingredients
- 1.5–2 lb rack of lamb
- 2 tablespoons olive oil
- 2 tablespoons fresh rosemary, chopped
- 3 cloves garlic, minced
- Salt and pepper, to taste
- 4 whole garlic cloves (for basting)
- 2–3 sprigs fresh rosemary (for basting)
- 2 tablespoons butter
- 1 cup beef stock (for gravy)
- 1 tablespoon cornstarch + 2 tablespoons water (slurry)
Instructions
Marinade
- Combine minced rosemary, minced garlic, olive oil, salt and pepper. Rub the mixture all over the frenched rack.
- Place the rack in a sealed container or bag and refrigerate for at least 4 hours or overnight for best flavor.
Sear and Bake
- Remove the lamb from the refrigerator 1–2 hours before cooking so it comes close to room temperature for even cooking.
- Wrap foil around the exposed rib bones if desired to protect them.
- Preheat the oven to 180°C / 350°F.
- Heat a cast-iron skillet over medium-high heat with a little oil. Sear the lamb 1 minute per side and along the edges.
- Add 2 tablespoons butter, whole crushed garlic and rosemary to the pan, then baste the lamb by spooning the melted butter over it for 1–2 minutes.
- Transfer the rack to a wire rack over a baking sheet, spoon a little butter from the skillet onto the meat, and roast for about 12 minutes. Use a meat thermometer to check that the internal temperature reaches 57°C / 135°F for medium-rare.
- Remove from the oven, loosely tent with foil, and rest for 7–8 minutes before carving.
Making the Gravy (optional)
- Discard garlic, rosemary sprigs and any burned bits from the skillet, leaving behind the butter and browned fond.
- Pour 1 cup beef stock into the baking sheet that collected the drippings and scrape to deglaze. Add this to the skillet.
- Sauté a fresh sprig of rosemary and a crushed garlic clove in butter until fragrant, then add the deglazed stock and simmer briefly.
- Stir in the cornstarch slurry until the gravy thickens. Strain for a smooth finish if desired.
Serving
Carve between the ribs into individual chops and serve with the warm gravy and your choice of side dishes.
Nutrition (per serving)
Calories: 708 kcal | Carbohydrates: 12 g | Protein: 28 g | Fat: 61 g | Saturated Fat: 26 g
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