1 large aubergine, cut into chunks
1 tbsp roughly chopped fresh basil
225g/8oz cherry tomatoes
2 courgettes, cut into chunks
1 small fennel bulb, cut into chunks
1 garlic clove, roughly chopped
1 yellow pepper, cut into chunks
1 red pepper, cut into chunks
1 red onion, cut into wedges
salt and freshly ground black pepper
25ml/1fl oz olive oil
150ml/5fl oz olive oil
25g/1oz butter
2 chumps of lamb, all fat removed