Emilie Meyer
Air fryers are a quick and easy way to make a lamb roast, and the perfect way to ensure your lamb is beautifully tender and moist on the inside, with a lovely crust on the outside. The cooking time for a 1kg lamb roast will depend on the size of the lamb joint, the type of air fryer you use, and how well you like your meat cooked. As a rule of thumb, it takes around 15-20 minutes of cooking time per pound of lamb, but you should always check the internal temperature periodically to ensure it is cooked to your liking.
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What You'll Learn
Cooking time and temperature
The cooking time and temperature for a 1kg lamb roast in an air fryer will depend on several factors, including the type of air fryer you have, the desired level of doneness, and whether the lamb has a bone in it or not.
Firstly, it is important to preheat your air fryer. Most sources recommend preheating to 360°F/180°C, although one source recommends 350°F/180°C for a medium level of doneness. If your air fryer does not have a preheat setting, you can simply set it to air fry for 3-4 minutes.
Once preheated, the lamb should be cooked for around 20-30 minutes at 360°F/180°C. One source recommends cooking a 1.1kg half leg of lamb for 45 minutes at this temperature for a medium level of doneness. However, another source suggests that 20 minutes at this temperature should be sufficient, and that you can then cook for additional 3-minute intervals if required.
It is important to note that cooking times may vary depending on the type of air fryer and the size and shape of the lamb roast. A general rule of thumb is to cook the lamb for 15-20 minutes per pound, or 10 minutes per 450g for rare, and then add five minutes for each degree of doneness that you prefer. For example, if you prefer your lamb well done, you would add 10-15 minutes to the cooking time.
To ensure that your lamb is cooked to your desired level of doneness, it is recommended to use a digital thermometer to check the internal temperature of the lamb. For a medium level of doneness, the internal temperature should be 70-75°C (157-167°F). For a well-done lamb roast, the internal temperature should be approximately 75-80°C (167-176°F).
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Preparing the lamb
It is important to note that the size of the lamb joint and the type of air fryer will impact the cooking time and temperature. Therefore, it is recommended to use a digital thermometer to ensure the lamb is cooked to your desired level of doneness. The temperature should be checked at the thickest part of the joint, avoiding any bones. For a medium-rare lamb, the internal temperature should be 63°C to 70°C, while for a well-done lamb, it should be 75°C to 80°C.
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Cooking the lamb
Step 1: Prepare the Lamb
Firstly, take the lamb out of the refrigerator and let it sit for 15 minutes or so to bring it to room temperature. This is an important step, as it will help the lamb cook more evenly. Pat the lamb dry with paper towels, then drizzle oil over it and rub it in. You can use vegetable oil, avocado oil, or olive oil—just make sure it's an oil with a high smoke point. Next, season the lamb. You can use salt and pepper, and perhaps some fresh rosemary and thyme. If you're using fresh rosemary, remember to pick the leaves off and chop them finely. You can also add some minced garlic. Make small incisions all over the lamb and rub the seasoning into these cuts to help it penetrate the meat.
Step 2: Preheat the Air Fryer
Set your air fryer to 360°F/180°C for 5 minutes while you prepare the rest of the meal. If your air fryer doesn't have a preheat function, just set it to air fry for 3-4 minutes.
Step 3: Prepare the Vegetables
If you want to cook vegetables with your lamb, now is the time to prepare them. Potatoes and carrots are a great option. Cut the potatoes into chunks and toss them with olive oil, salt, and pepper. You can also add some garlic cloves to the mix. Scatter the vegetables around the lamb in the air fryer basket.
Step 4: Cook the Lamb
Place the lamb in the air fryer basket, being careful not to touch the hot metal with your hands if the basket is preheated. Set the air fryer to 360°F/180°C and cook for 20-30 minutes for medium-rare to medium. For a 1.1kg leg of lamb, you may need to cook for 45 minutes to reach a medium level of doneness. If you prefer your lamb well done, you will need to cook it for longer. As a rule of thumb, estimate 10 minutes per 450g for rare, then add five minutes for each degree of doneness that you require. However, it's important to use a meat thermometer to check that the lamb is cooked to your liking. The thickest part of the joint should read 70-75°C (157-167°F) for medium, and 75-80°C (167-176°F) for well-done.
Step 5: Rest the Lamb
Once the lamb is cooked to your liking, remove it from the air fryer and let it rest for about 10 minutes before carving. This will allow the juices to redistribute and ensure a juicy, tender roast.
Step 6: Make Gravy (Optional)
If you want to make a simple gravy, deglaze the air fryer basket with a little water or broth, then transfer the liquid to a saucepan. Bring it to a simmer and thicken with a cornstarch slurry until you reach your desired consistency.
And that's it! You now have a perfectly cooked, juicy, and tender lamb roast with crispy vegetables and gravy. Enjoy!
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Cooking vegetables
While there is no consensus on how long to cook a 1kg lamb roast in an air fryer, a rule of thumb is to allot about 15-20 minutes of cooking time per pound of meat. This means that a 1kg lamb roast will take approximately 40 minutes to cook. It is important to note that cooking times may vary depending on the shape and size of the roast, the type of air fryer used, and the desired level of doneness.
Now, for the vegetables, here is a step-by-step guide:
Selecting the Vegetables
Choose a variety of colourful, fresh, or frozen vegetables to air fry. Some options include carrots, broccoli, cauliflower, zucchini, peppers, asparagus, Brussels sprouts, and green beans. You can also add in some firm vegetables like root vegetables (beets, potatoes, parsnips) but keep in mind that they will take longer to cook.
Preparation
Chop the vegetables into small, evenly sized pieces. Smaller pieces will cook faster and ensure even cooking. If using firm vegetables, you can peel them before chopping.
Seasoning
Drizzle or toss the vegetables with extra-virgin olive oil. This will help them brown and develop a roasted flavour. You can also add Italian seasoning, garlic powder, salt, and pepper to taste.
Cooking
Preheat your air fryer to 375°F (190°C). Place the vegetables in the air fryer basket in a single layer, ensuring they are not overcrowded. Cooking in batches may be necessary. Cook for 10 to 15 minutes for tender vegetables, and 20 to 30 minutes for firm vegetables, tossing or shaking the basket halfway through to promote even cooking and browning.
Serving
Transfer the cooked vegetables to a serving dish and squeeze with fresh lemon juice. Top with grated Parmesan cheese and garnish with fresh parsley, if desired.
Enjoy your delicious and healthy side dish!
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Resting and serving
Resting the lamb roast is an important step in the cooking process. Once the lamb has been cooked to your desired level of doneness, remove it from the air fryer and let it rest for about 5 to 10 minutes before carving. This allows the juices to redistribute and the lamb to continue cooking, resulting in a juicy and tender roast. The temperature of the lamb will continue to rise a few degrees during this resting period.
While the lamb is resting, you can prepare any side dishes or gravy to serve with the roast. For a simple gravy, you can deglaze the air fryer basket with a little water or broth, transferring the liquid to a saucepan and thickening it with a cornstarch slurry. You can also use this time to prepare any fresh herbs or spices that you would like to sprinkle over the lamb before serving.
When it comes to serving, the lamb roast can be sliced and served with a variety of sides. Crispy roasted potatoes, carrots, peas, and other vegetables pair well with the lamb. Don't forget to spoon some rich brown gravy over the top for added flavour. If you prefer your lamb with a crust, you can briefly place it back in the air fryer after resting to achieve the desired texture.
It is important to note that cooking times and temperatures may vary depending on the size of the lamb roast and the type of air fryer being used. A digital thermometer is the best way to ensure the lamb is cooked to your desired level of doneness. For a 1kg lamb roast, a good starting point is to cook it at 360°F/180°C for 25-30 minutes for medium-rare, but this may need to be adjusted based on your specific air fryer and preferences.
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Frequently asked questions
The cooking time depends on the size of the lamb joint and the type of air fryer you use. As a rule of thumb, it takes about 15-20 minutes of cooking time per pound (roughly 450g). For a 1kg lamb roast, this would be about 60-80 minutes.
The best way to check if your lamb is cooked to your liking is to use a meat thermometer. Insert the probe into the thickest part of the joint, avoiding the bone. For a medium-rare lamb roast, the internal temperature should be 63°C-75°C. For a well-done lamb roast, the internal temperature should be 75°C-80°C.
First, take the lamb roast out of the refrigerator and let it sit for 15-30 minutes to bring it to room temperature. Preheat your air fryer to 360°F/180°C. Prepare the lamb by making small incisions all over and rubbing it with a mixture of oil, garlic, herbs, salt, and pepper. Place the lamb in the air fryer basket and cook for the desired amount of time.
