
This incredibly tender Massaman lamb shoulder is slow-roasted until it literally falls off the bone. Infused with aromatic Thai spices and creamy coconut milk, this effortless one-pan meal is the ultimate comfort food for a stress-free family feast.
Preheat your oven to 220°C/425°F (200°C for fan-forced ovens).
In a large, deep roasting pan, whisk together the Massaman curry paste, coconut milk, and chicken stock until the mixture is smooth and free of lumps.
Place the lamb shoulder in the pan and turn it to coat thoroughly in the sauce. Position the lamb so it is meaty-side down (fat side up) to ensure the meat stays moist during the long roast.
Scatter the chopped onion, cinnamon sticks, star anise, and baby potatoes in the sauce around the lamb. Cover the pan tightly with a double layer of aluminum foil.
Place in the oven and roast for 1 hour. After an hour, lower the oven temperature to 180°C/350°F (160°C fan) and continue roasting for a further 3 hours.
Remove the foil and check the meat with two forks; it should be very tender and easy to pull apart. If it's still a bit tough, cover and roast for another 30 minutes.
Carefully turn the lamb over so the fat side is now facing up. Spoon some of the sauce over the meat and bake uncovered for 30 minutes, or until the lamb is deep golden brown and the potatoes are perfectly tender.
Remove from the oven and let the lamb rest for 10 to 15 minutes. Skim off any excess fat from the surface of the sauce and discard. Stir the sauce well to combine the flavors.
Transfer the lamb and potatoes to a serving platter. Garnish with fresh sliced red chilies and coriander sprigs. Serve hot with steamed Jasmine rice.
For the best results, use a high-quality Thai curry paste like Maesri. If you prefer a thicker sauce, you can remove the lamb and potatoes after cooking and simmer the sauce on the stovetop for a few minutes to reduce it, though Massaman sauce is traditionally light and runny. If the lamb shoulder is very fatty, don't be afraid to skim off a significant amount of oil before serving to keep the dish from feeling too heavy.





