Roast Lamb with Garlic & Rosemary

By October 24, 2023Recipes

Rosemary and Garlic Roasted Lamb with Homemade Gravy – A mouthwatering masterpiece of tender lamb, aromatic herbs, and rich, homemade gravy.


  • 1 large leg of lamb with or without bone (about 2.5kg)
  • 2 bulbs of garlic
  • a few sprigs of rosemary
  • 100ml olive oil
  • 1 tbsp flaky sea salt
  • 3 onions, roughly chopped
  • 5 carrots, sliced in half lengthways
  • 500ml chicken stock – use gluten-free stock if required
  • 2 tsp cornflour


  1. Begin by creating small openings all over the lamb. Take 10 garlic cloves, peel them, and then cut them in half. Insert these garlic pieces into the openings you made in the lamb. Take small sections of rosemary and place them into the remaining openings. Afterward, gently rub the lamb with a bit of olive oil and season it with sea salt.
  2. Position the lamb on a wire rack inside a roasting tray and let it sit at room temperature for approximately 1 hour. This will help the lamb cook evenly.
  3. Preheat your oven to 200°C (or 180°C with a fan, gas mark 6). Put the onions and carrots in the bottom of the roasting tray underneath the lamb on the rack. Add the remaining olive oil, unpeeled garlic cloves, and a few sprigs of rosemary. Place the lamb in the oven and roast for 15 minutes to achieve a nice browning. Afterward, lower the oven temperature to 180°C (or 160°C with a fan, gas mark 4). Continue roasting for approximately 1.5 hours, or adjust the time to your desired level of doneness. You can check for doneness by inserting a roasting fork into the center of the meat and lightly touching the fork to your upper lip or inner wrist. It should feel slightly warmer than your body temperature. For a well-done lamb, roast for around 2.5 hours. Once done, remove the lamb from the oven and allow it to rest for 10-15 minutes.
  4. While the lamb is resting, prepare the gravy. Remove any excess fat from the roasting tray and place it on the stovetop. If the vegetables aren’t yet caramelized, sauté them until they reach the desired color. Add chicken stock, bring it to a simmer, and season to taste. In a separate bowl, mix cornflour with a bit of cold water, then whisk it into the gravy. Include any juices that have accumulated while the lamb was resting. Simmer for a few minutes, pressing the vegetables to extract their flavors. Strain the gravy through a sieve into a separate pan and keep it warm until you’re ready to serve.