Lamb chops are one of my favorite proteins, especially as spring arrives. A rack of lamb is often the centerpiece at my Easter table. For a long time I found preparing this roast intimidating: the cost and the quick cooking time made me nervous about overcooking it.
Culinary school taught me how to cook protein confidently. I took notes and practiced, and now I’m sharing the method that consistently delivers a tender, flavorful rack of lamb.
❤️ Why You’ll Love my Garlic-Herb Roasted Rack of Lamb
Although it looks impressive, this garlic-herb roasted rack of lamb is surprisingly simple. It doesn’t need a long marinade or complicated prep, and the cook time is typically under an hour.
The marinade can be made up to three days ahead and stored in the refrigerator, saving time on the day you roast. It also works great on potatoes, so you can marinate both lamb and potatoes with the same mixture for an easy, cohesive meal.
🍲 Ingredients
Frenched rack of lamb – Choose a rack with a good fat cap and some marbling. You may find it pre-frenched in the supermarket, or your butcher can prepare it for you. Frenched racks have the excess meat and cartilage removed from the bones for a clean presentation and easier carving.
Kosher salt – Salt is essential to flavor. I prefer Diamond Crystal kosher salt, but use any quality kosher salt and season generously.
Freshly ground black pepper – Use fresh for the best flavor.
Fresh rosemary – Lamb and rosemary are a classic pairing; fresh sprigs add aromatic depth.
Fresh garlic – You’ll need several cloves for the marinade.
Lemon zest – Adds bright acidity that balances the richness of the lamb.
Olive oil – Binds the marinade and helps the herbs adhere to the meat.
Butter – Used for basting while searing to add richness.
Potatoes – Optional but recommended. Roasted potatoes are a perfect side; golden potatoes work well.
👩🍳 How to Make Garlic-Herb Roasted Rack of Lamb
Step 1 – Prep and season the lamb
Remove the lamb from its packaging and pat it very dry. Scoring the fat cap is optional but helps render and crisp the fat: make shallow diagonal cuts in one direction, then cross them in the opposite direction, staying in the fat layer only. Season generously with kosher salt and freshly ground pepper on all sides. Place the roast on a wire rack set over a sheet tray and allow it to come to room temperature while you make the marinade. (You can salt and refrigerate the roast uncovered up to two days in advance; bring it back to room temperature about two hours before roasting.)
Step 2 – Make the marinade
Combine fresh rosemary, garlic, lemon zest, salt, pepper, and olive oil in a food processor and blend to a coarse paste. This aromatic rub flavors the lamb and doubles as a potato seasoning.
If you’re roasting potatoes, peel and cube them, toss with about one-third of the marinade, spread on a sheet tray, and roast at 400°F for 30–45 minutes, flipping once, until golden and crisp.
Step 3 – Sear the lamb
Heat a large skillet over medium-high heat until hot. Add the lamb fat-side down and sear about 2–3 minutes until golden brown. Flip the rack, add butter and a few rosemary sprigs, and baste the meat with the melted butter using a spoon. Quickly sear the exposed ends, then return the rack to the wire rack on the sheet tray, fat-side up.
Step 4 – Rub and roast the lamb
Preheat the oven to 400°F. Generously coat the fat side of the lamb with the remaining marinade. Roast at 400°F for approximately 15–20 minutes per pound for medium-rare. A 2 lb rack typically needs about 30–40 minutes; check the internal temperature at the thickest part—125–130°F for medium-rare. The roast will rise a few degrees while resting.
Step 5 – Rest and slice
Remove the roast and let it rest for 10 minutes. Resting lets the juices redistribute and makes carving easier. Slice by cutting between the rib bones into individual chops and serve immediately.
🪄 Tips and Tricks
- Choose quality lamb. A good cut makes a big difference in flavor and texture.
- Sear first. Searing builds a flavorful crust and helps trap juices before roasting.
- Let it rest. Resting is critical for even temperature and juicier slices.
🗒 Substitutions
There are just a few ingredients here, so substitutions are straightforward.
- Swap rosemary for fresh thyme or mint if you prefer.
- Use orange zest instead of lemon zest, or omit the citrus entirely.
- Omit garlic if you don’t enjoy it.
🗒 Best served with
- Roasted potatoes
- A fresh salad
- Green beans
- A light pasta
🤔 Common Questions
Use this guide for a 400°F oven after searing:
Medium-rare: 15–20 minutes per pound
Medium: 20–25 minutes per pound
Medium-well: 25–30 minutes per pound
A 2 lb rack typically takes about 30–40 minutes for medium-rare. Because ovens vary, start checking early and use an instant-read thermometer at the thickest part.
Yes. Roasting without searing will cook the lamb, but you’ll miss the caramelized crust and some flavor depth that searing provides.
Garlic-Herb Roasted Rack of Lamb
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Ingredients
- 1 Frenched rack of lamb, about 1.5–2 lbs
- Kosher salt, to taste
- Freshly ground black pepper, to taste
- 3–4 tbsp fresh rosemary, chopped
- 8 cloves fresh garlic, minced
- 1 Lemon, zested
- 3 tbsp olive oil
- 2 tbsp butter
- 1 lb Potatoes, any kind; gold potatoes are a favorite
Instructions
Prep the Lamb
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Pat the lamb dry and score the fat cap if desired. Season generously with salt and pepper. Set the lamb on a wire rack over a sheet tray and let it sit at room temperature while you prepare the marinade.
Make the Marinade
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Combine rosemary, garlic, lemon zest, salt, pepper, and olive oil in a food processor and blend until smooth. If using potatoes, peel and cube them, toss with one-third of the marinade, and roast at 400°F for 30–45 minutes, flipping once until golden brown.
Sear the Lamb
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Heat a skillet over medium-high heat. Add the lamb fat-side down and sear until golden, about 2–3 minutes. Flip, add butter and rosemary, and baste the lamb. Sear the ends, then transfer to the wire rack, fat-side up.
Roast the Lamb
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Preheat the oven to 400°F. Rub the lamb with the remaining marinade and roast for 15–20 minutes per pound for medium-rare (internal temp 125–130°F). A 2 lb rack will take about 30 minutes.
Rest and Slice
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Allow the lamb to rest for 10 minutes before slicing between the ribs. Serve hot and enjoy.
Nutrition
Nutrition information is an approximation.
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