Mary Berry Slow Roast Lamb with Potatoes is a slow-cooked lamb shoulder or leg roasted with seasoned potatoes, herbs, garlic, and stock. As the lamb cooks gently for hours, it becomes tender enough to fall apart, creating a rich one-pan dish full of flavor.
1 whole lamb shoulder or leg, bone-in (2–2.5 kg)
3 tbsp olive oil
4 garlic cloves, crushed
2 tbsp fresh rosemary, chopped
1 tbsp fresh thyme, chopped
1 ½ tsp salt
1 tsp black pepper
2 onions, sliced
6–8 medium potatoes, peeled and halved
250ml lamb or chicken stock
2 tbsp lemon juice
Pat the lamb dry, score lightly, and season generously with salt, pepper, and herbs.
Combine olive oil, crushed garlic, rosemary, thyme, and lemon juice into a thick rub.
Massage the paste all over the lamb, pressing it into the scored cuts.
Layer sliced onions and halved potatoes in the roasting tray to create a flavorful base.
Pour stock around the potatoes so they roast gently without drying.
Set the lamb over the potatoes, allowing its juices to drip down as it cooks.
Cover tightly with foil and roast at a low temperature until the lamb becomes tender.
Remove foil during the final hour so the lamb and potatoes gain golden color.
Allow the lamb to rest 15–20 minutes so the juices settle inside the meat.