
Air fryers are a great way to cook a lamb leg, sealing in flavour and cooking the meat to perfection. The small space of an air fryer means less heat loss, so it cooks food quicker and more efficiently than an oven. This means you can have a juicy, tender and flavourful lamb roast in less time and with less energy usage. You can cook a lamb leg in an air fryer with the bone in, but it's important to note that it may be challenging to fit a whole leg in some models due to its size. Therefore, it's recommended to opt for a half leg or smaller portions, such as lamb steaks. The cooking time will depend on your desired level of doneness and the type of air fryer you are using, but a meat thermometer is a useful tool to gauge when your lamb is ready.
How to cook a lamb leg in an air fryer
| Characteristics | Values |
|---|---|
| Type of lamb | Boneless leg of lamb, half leg of lamb, or sliced lamb |
| Marinade | Olive oil, vegetable oil, salt, pepper, oregano, garlic, lemon juice, rosemary, thyme, tarragon, butter |
| Temperature | 200°C (400°F) for 10 minutes, then 180°C (360°F) for 30-40 minutes, or 180°C (350°F) for 45 minutes |
| Time | 40-55 minutes |
| Internal temperature | 145°F/63°C for medium-rare, 135°F/57°C for medium-rare, 125°F/52°C for rare, 157-167°F/70-75°C for medium, 165°F/74°C for well-done |
| Resting time | 10 minutes |
| Sides | Potatoes, parsnips, onion, carrots, Greek salad |
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What You'll Learn

Choosing the right cut of lamb
Size and Fit
The size of the lamb cut is crucial. Ensure that the lamb fits comfortably in your air fryer basket or rack, allowing for proper air circulation and even cooking. If your air fryer is on the smaller side, consider choosing a boneless leg of lamb or slicing a large leg of lamb into thinner portions. This way, you can avoid overcrowding and achieve that perfect crispy exterior.
Cooking Time and Temperature
Different cuts of lamb will have varying cooking times and temperatures. A thicker cut of lamb, such as a rack of lamb, may require a longer cooking time. Additionally, the desired level of doneness will impact your choice. For example, lamb chops are an excellent option if you're short on time as they cook quickly and evenly, typically taking around 7-9 minutes for medium-rare to medium doneness. On the other hand, a larger leg of lamb roast might require 30-40 minutes at a similar temperature.
Flavor and Tenderness
The cut of lamb can significantly impact its flavor and tenderness. Lamb leg chops, for instance, are known for having a milder, less gamey flavor, but they tend to be more expensive. A leg of lamb, on the other hand, is a flavorful and tender cut, often considered a prized choice for special occasions. It can be roasted whole or divided into smaller cuts like lamb shanks or steaks.
Personal Preference and Creativity
Ultimately, choosing the right cut of lamb depends on your personal preferences and culinary creativity. Do you prefer the convenience of quicker cooking times or the versatility of larger cuts? Are you looking for a milder flavor profile or the robust taste of a traditional leg of lamb? By considering these factors, you can select the perfect cut of lamb to create a mouthwatering air-fried dish.
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Preparing the lamb
Firstly, select the right cut of lamb. A boneless leg of lamb is a versatile option that can be easily cut into smaller portions or steaks that fit in the air fryer. Alternatively, opt for a butterflied leg of lamb, which is a boneless cut that has been flattened, or a half leg of lamb. If you prefer lamb with the bone in, keep in mind that it will add flavour but increase the cooking time.
Next, take the lamb out of the fridge about 30 minutes before cooking. This allows the meat to come to room temperature, which aids in even and quick cooking. If you plan to season the lamb, now is a good time to do so. You can rub the lamb with butter to create juicy meat, and season with herbs like rosemary, thyme, or tarragon. Additionally, you can use a dry seasoning mix or a wet marinade. If you're using a dry rub, a little oil on the lamb will help the seasoning stick.
Once the lamb is at room temperature, it's time to get your air fryer ready. If your air fryer requires pre-heating, turn it on now. Place the lamb in the air fryer basket, ensuring it fits comfortably without overcrowding. If your lamb has a thick layer of fat, place it fat cap up on the rack. If you plan to cook potatoes or other vegetables with the lamb, add them to the basket first and push the lamb in among them.
Finally, set the temperature and cooking time according to your desired level of doneness. For a rare half-leg of lamb, cook for about 40 minutes at 200°C (400°F) initially, then lower the temperature to 180°C (360°F) for a nice crust. For medium-rare, aim for 45 minutes, and for medium, about 50 minutes. If you like your lamb well-done, cook it for about 55 minutes. These timings are for a boneless leg; bone-in lamb will take longer. The best way to ensure your lamb is cooked to your liking is to use a meat thermometer. For a rare finish, the internal temperature should be 52°C (125°F); for medium-rare, 57°C (135°F); for medium, 63°C (145°F); and for well-done, 74°C (165°F).
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Cooking times and temperatures
The cooking time and temperature for a lamb leg in an air fryer depend on the size and weight of the lamb cut, the type of air fryer, and your desired level of doneness. It is recommended to cook to temperature rather than time, so a meat thermometer is useful.
For a 1.1kg half leg of lamb, air fry at 180°C/350°F for 45 minutes for a medium level of doneness. For a well-done roast, increase the temperature to 167°F-194°F/75°C-90°C.
For a 1kg leg of lamb, air fry at 200°C/400°F for 10 minutes, then lower the temperature to 180°C/360°F and cook for another 30-40 minutes. The core temperature of the meat should be 145°F/63°C for a medium level of doneness.
For a 1.6kg boneless leg of lamb, air fry at 200°C/400°F for 20 minutes, then lower the temperature to 160°C/325°F and cook for another 45 minutes. The internal temperature of the meat should be 140°F/60°C.
For a medium to medium-rare level of doneness, cook the lamb to an internal temperature of 130°F-140°F/54.4°C-60°C. For a well-done roast, cook the lamb to an internal temperature of 140°F-170°F/60°C-76.6°C.
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Resting the meat
The density and surface area of the meat play a role in carryover cooking. While a steak or chicken breast may only rise in temperature by 5–10 degrees during resting, a thicker roast can increase in temperature by 15 degrees or more. This can turn a perfectly cooked roast into an overcooked one very quickly. So, take your lamb roast out of the air fryer when it reaches about 10 degrees below your target temperature and let it rest.
After resting, use a sharp knife to slice the lamb against the grain for the most tender meat. To find the direction of the grain, cut off a small piece of meat. If you don't see what looks like cross-hatch marks, you're not cutting against the grain.
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Making gravy from the juices
Once the lamb is cooked to your desired level of doneness, remove it from the air fryer and let it rest for at least 10 minutes. This allows the juices to redistribute, resulting in a more tender and flavourful roast. It is important to wrap the lamb in foil and keep it warm while it rests. This is also a good opportunity to make the gravy and finish off any side dishes.
While the lamb is resting, you can make a gravy using the drippings and juices collected from the air fryer. For example, you can add some flour and water to the drippings, stirring continuously until thickened, and then season to taste. Alternatively, you can use the juices as a base for a lamb stock or gravy, adding garlic and herbs for extra flavour.
To make the gravy, start by collecting the juices that have accumulated in the air fryer basket or resting plate. Don't discard these juices, as they will add flavour to your gravy. You can also add any juices that have collected in the bottom of the foil after unwrapping the lamb.
If you prefer a thicker gravy, you can add a flour and water mixture to the juices, stirring continuously until it reaches your desired consistency. Alternatively, you can use a cornstarch slurry or a roux to thicken the gravy. Season the gravy to taste with salt, pepper, and any desired herbs or spices.
If you prefer a thinner gravy, you can simply whisk the juices and drippings until well combined, and then season to taste. You can also add a small amount of water or stock to thin out the gravy if needed.
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Frequently asked questions
First, take the lamb out of the fridge 30 minutes before cooking and let it come to room temperature. This will help it cook evenly. Then, make small incisions all over the lamb using a sharp knife and push small garlic cloves into the skin. Drizzle the lamb with olive oil and season with salt and pepper. You can also add potatoes to the air fryer basket and drizzle them with olive oil, salt, pepper, oregano, and lemon juice. Next, place the lamb in the basket, ensuring it fits well without sticking up too much. Set the air fryer to 200°C (400°F) and cook for 10 minutes to develop a nice crust. Lower the heat to 180°C (360°F) and continue cooking for 30-40 minutes or until the core meat temperature reaches 63°C (145°F) for medium-rare. Finally, let the lamb rest for about 10 minutes before carving and serving.
It is important to ensure that the lamb fits comfortably in your air fryer. If you have a smaller air fryer, you may need to slice the lamb into thinner portions or opt for a half leg or smaller cuts like lamb steaks. Additionally, using a meat thermometer will help you achieve your desired level of doneness. For a juicy leg of lamb, aim for a core temperature of 63°C (145°F) for medium-rare. You can also make a simple gravy using the pan drippings by deglazing the air fryer basket with water or broth and thickening the liquid with a cornstarch slurry.
You can season a leg of lamb with a variety of herbs, spices, and marinades to suit your taste preferences. Some popular options include garlic, rosemary, thyme, olive oil, salt, and pepper. You can also try a Mediterranean blend or experiment with different combinations to create a unique and mouthwatering dish.

















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