1 - Heat the grill to high.

2 - Brown the beef in a deep ovenproof frying pan over a high heat for 5 mins.

3 - Meanwhile, prick the aubergine with a fork, then microwave on High for 3-5 mins until soft.

4 - Mix the yogurt, egg and parmesan together, then add a little seasoning.

5 - Stir the tomatoes, purée and potatoes in with the beef with some seasoning and heat through.