How to Roast Lamb That's Tender and Juicy Every Time (2024)

Get all the preparation tips and cooking times you need to roast lamb that's crusty on the outside, tender and juicy on the inside. We'll share tips on how to choose the right cuts of lamb, how to season it, and the ideal roasting times and temperatures.

Choosing the Right Cuts

The leg and rack are the most tender cuts of meat on a lamb, and are at their best when roasted. Roasting is a "dry heat" cooking method, meaning that you do not add any liquid to the meat as you cook it.

Tougher cuts of lamb, such as shank and shoulder, are best for braising and stewing.

17 Roast Leg of Lamb Recipes Worth Celebrating

Leg of Lamb

You can purchase leg of lamb bone-in or boneless. A whole leg of lamb often includes the shank portion, but since the shank does not take well to the dry heat of roasting, it's best to buy the leg without the shank. You can also buy a half leg of lamb; the butt-end of the leg will be the meatiest and most tender.

Rack of Lamb

Rack of lamb is the cut with the rib bones or chops. This succulent roast is often served "Frenched," with the fat and meat trimmed from between the ribs and the bones scraped clean and protruding outward. Your butcher should be able to prep the roast for you; remember to ask for the meat trimmings if you want to make soup later on. When two or more racks of lamb are tied together to form a circular roast, it's called a crown roast.

How to Roast Lamb That's Tender and Juicy Every Time (2)

Seasoning Roast Lamb

Lamb is flavorful enough on its own that it doesn't need much seasoning, yet robust enough that it pairs beautifully with any number of boldly flavored seasonings, like rosemary, oregano, marjoram, thyme, lemon zest, cumin, coriander, mint, and garlic.

How to Season Lamb for Roasting:

  • Trim some of the excess fat and any silver skin;
  • Chop up herbs/seasonings and rub the mixture evenly over the surface of the meat;
  • Wrap the coated meat tightly in plastic wrap and refrigerate overnight for the best flavor.

Another popular way to season a roast is to make small incisions on the surface of the meat and push slivers of garlic and sprigs of herbs into the slits. You can do this right before you begin roasting or a day ahead for more intense flavor.

12 Lamb Marinade Recipes for a Tender, Juicy, Delicious Feast

When you're seasoning the lamb, don't salt it until just before cooking; salt can draw moisture out of the meat.

With this 5-star roasted lamb recipe, there's no need for mint jelly on the side because Chef John roasts the mint flavor right into the crust. And instead of the jelly, Chef John serves his rack of lamb with a slightly sweet vinaigrette. See how it's done below.

Roasting Lamb: Temperatures and Times

Before roasting lamb, remove it from the refrigerator and allow it to sit at room temperature for at least 30 minutes. A piece of meat at room temperature will roast more evenly.

Use a roasting rack to ensure even browning and heat circulation around the meat.

How to determine the ideal roasting temperature and time for lamb. The amount of fat that your lamb has on the outside and marbled through the middle will determine the cooking time and temperature:

  • Roast leaner cuts in a hotter oven: A hot oven gets leaner cuts of meat nicely browned on the outside before they become overcooked and dry in the middle. For a lean piece of meat, cook at 450 degrees F (230 degrees C) for the first 15 minutes, then turn the temperature down to 350 degrees F (175 degrees C) to continue roasting — the meat will take about 25 minutes per pound to reach medium rare.
  • Roast fattier pieces of lamb longer and at lower temps: For a fattier piece of meat, roast at 325 degrees F (160 degrees C) for a longer period of time, allowing the fat to slowly melt and bathe the roast in its own juices. Meat cooked with this method will take about 30 minutes per pound to reach medium rare.

Flavor-Packed Side Dishes for Lamb

The most accurate way to determine doneness is with a meat thermometer:

  • 110 degrees F (42 degrees C) is rare
  • 120 degrees F (58 degrees C) is medium-rare
  • 145 degrees F (68 degrees C) is medium-well

The USDA recommends cooking roasts to 145 degrees F. Avoid cooking your lamb beyond this temperature as the meat can become dried out and tough.

How to Roast Lamb That's Tender and Juicy Every Time (3)

Always Rest Your Roast

Once your roast is within 10 degrees F (5 degrees C) of its ideal cooked temperature, remove from the oven, place a foil tent loosely over it, and let rest for 15-20 minutes. As the meat rests, the internal temperature will increase by several degrees, the muscle fibers will relax, and the juice that has come to the surface of the meat during cooking will begin to return to the center. A well-rested piece of meat will be more tender and retain its juices better when you slice it.

How to Roast Lamb That's Tender and Juicy Every Time (2024)

FAQs

How do you keep lamb moist when cooking? ›

All the lamb needs is a sprinkle of salt and pepper, drizzle of olive oil. Add beef broth/stock and water into the pan (keeps everything all nice and moist + makes pan juices for gravy), cover then slow roast for 5 hours until tender and fall apart.

How do you keep roast lamb from drying out? ›

Lower temp = more succulent meat – Tough cuts like lamb shoulder need slow-cooking to tenderise them. The lower the roasting temperature, the less total moisture evaporation and thus juicier meat. 3-hour lamb is cooked at 180°C/350°F, while the 12 hour lamb is cooked at only 100°C/212°F.

How do you cook lamb without it going tough? ›

Slow-cooking lamb

Slow cooking in liquid transforms tougher cuts of lamb into fork-tender meat. Neck, shoulder and belly, either diced or as whole joints, are the best cuts for slow cooking and need to be cooked for at least 2 hrs at 150C to soften the meat.

How to make lamb meat tender? ›

Raw vegetables, fruits, and malt contain enzymes that help in breaking down proteins. Using these ingredients when preparing lamb meat can help make your meat tender. One way to do this is by using salted koji to soften the meat. It contains just the right amount of salt so that it also serves to season the meat.

What is the preferred cooking method for lamb? ›

It can be traditionally roasted but is best slow-roasted, pot-roasted or braised with liquid until practically falling apart. Shoulder can also be diced for stewing, or cut into shoulder chops. A pre-sliced roast is convenient, but it tends to dry out in the oven.

Why is my lamb always tough? ›

When meat is sliced with the grain, it often results in tougher, chewier pieces. Follow this tip: The grain of the meat refers to the direction in which the muscle fibers run. Always slice lamb against the grain, cutting across the muscle fibers rather than with them.

What is the best temperature to roast lamb? ›

Roast leaner cuts of lamb in a hotter oven (450°F) to get a lovely brown crust and a well-cooked center; cook fattier cuts of lamb low and slow (325°F) to render all the fat and allow the lamb to cook in its juices. Due to residual heat, your lamb will continue to cook even after you pull it out of the oven.

How do you keep moisture in a roast? ›

The best way to do this is by placing the meat fat side up. This way, fat drips down the roast beef as it melts and you get a succulent roast. It's essentially a self-basting technique that ensures the meat is always covered in juice to prevent drying out.

How to cook lamb so it's not chewy? ›

Temperature is by far the most critical aspect of cooking lamb chops. Undercooking even tender lamb chops can render them unpleasantly chewy, while overcooking will lead to tough, dried-out meat. Rib chops should be cooked to about 130°F, while loin chops are better at 135°F or even 140°F.

Do you need to brown lamb before roasting? ›

For the perfect roast lamb, we recommend seasoning the surface of the meat, and then searing it, especially fat side down in a pan before roasting. Why bother with searing? Contrary to some stories, searing is less about locking in moisture, and all about improving the flavour!

How long does it take for lamb to tender? ›

Medium: About 25 minutes per pound or until internal temperature registers 135°F to 140°F. Well-Done: About 30 minutes per pound or until internal temperature registers 155°F to 165°F. Falling-Apart Tender Lamb: About 40 minutes per pound or until the internal temp registers 175°F. This can take about 6 hours or so.

What is a natural meat tenderizer for lamb? ›

Baking soda acts as a meat tenderizer by changing the physical composition of meat fibers. It raises the pH levels on the surface and makes it tougher (pun intended) for the proteins in the meat to bond.

How to stop lamb from drying out? ›

To prevent lean cuts from drying out while cooking, the meat may be rubbed with oil prior to roasting and/or basted with pan juices during roasting. The only reliable guide for making sure that a lamb roast has reached a particular stage of doneness, is with the use of an accurate meat thermometer.

What is the best tenderiser for lamb? ›

Tenderising lamb meat

Baking soda / bi-carb and cornflour/cornstarch are the secret ingredients that tenderise the lamb meat. It's a technique called “velveting” that is used by Chinese restaurants, and it's the reason why the meat in your favourite Chinese dishes are always so soft.

Why is my lamb so dry? ›

OVERCOOKING THE LAMB.

The more you cook it, the more it dries out. Scientifically speaking, meat fibers contain water and connective tissue that turns into gelatin as the meat cooks.

How do you moisten cooked lamb? ›

The best way is to slowly reheat it in a covered dish, adding some water or broth to moisten the meat. You can also slice the Lamb before reheating, which will help it heat through more evenly.

What is a way to keep meat moist? ›

Make a brine by combining 1 cup of salt to 1gallon of water. Brine the meat about four hours and rinse thoroughly. There will be no added saltiness to the finished product. Brine a turkey overnight in the same solution, increasing the amount of brining liquid to cover the bird.

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