2 aubergines, cut into 2.5cm/1in thick slices
500g/1lb 2oz cherry tomatoes
500g/1lb 2oz courgettes, cut into 2.5cm/1in thick slices
4 garlic cloves, smashed with skins on
2 red, yellow or orange peppers, thinly sliced
1 red onion, cut into eighths
salt and freshly ground black pepper
4 tbsp olive oil