This a showstopper – everyone I make it for says that it is melt-in-the-mouth delicious. The spices are not too strong for kids but add incredible flavour and a twist to normal lamb. It’s also fuss-free as it’s a one-pot dish that takes hardly any prep. To turn this into a Sunday roast, don’t add the couscous at the end, swap the potatoes for celeriac and serve with roasted potatoes. You can even prepare it the night before to pop in the oven when you’re ready.