Remove the lamb from the fridge 1–2 hours before cooking. Make sure all packaging is removed.
Preheat the slow cooker
Add 1 cup of water to the slow cooker and set it to HIGH while you prepare the lamb.
Pat dry
Use paper towels to dry the lamb thoroughly on all sides.
Season and oil
Rub the lamb with olive oil, then season generously with salt and pepper.
Prepare the slow cooker
Discard the preheating water and add 2 cups of fresh water to the slow cooker.
Slow cook
Place the lamb into the slow cooker, cover, and cook on LOW for 7 hours.
Optional: brown the lamb
About 30 minutes before the cooking time is up, preheat the oven to 200°C / 400°F.
Carefully remove the lamb from the slow cooker and place it on an oven tray. Roast for 10–15 minutes, or until lightly browned on top. Keep an eye on it, as ovens vary.
(This step is optional — the lamb is fully cooked and ready to serve straight from the slow cooker.)
Rest and serve
Transfer the lamb to a serving platter, cover loosely with foil, and rest for 15–20 minutes before serving.
Serve shredded with forks and spoon over the pan juices if desired.
Notes
Resting the lamb Letting the lamb rest after cooking helps the juices redistribute, keeping the meat tender and easier to serve.
Bringing lamb to room temperature This can help the lamb cook more evenly, especially for larger cuts, but it’s not essential for a successful result.
Preheating the slow cooker Preheating with a little water helps the slow cooker come up to temperature more quickly, giving the lamb a consistent start to cooking.
Texture guide After 7 hours on LOW, the lamb should be very tender and easy to pull apart with a fork.
Liquid in the slow cooker The water creates a moist cooking environment and prevents the lamb from drying out.