
Preheat the oven to 170C/150C Fan/Gas 3½.
Put the lamb in a medium, ovenproof casserole dish and coat evenly with the harissa paste.
Pour in the chopped tomatoes and water. Bring to the boil over a medium heat and stir well.
Cover tightly with kitchen foil and bake for 1 hour.
Stir in the chickpeas and apricots, if using, and bake for an additional 30–45 minutes, or until the lamb is tender.
Stir in the coriander and serve hot.