1 medium aubergine, cut into roughly 3cm/1录in chunks
2 medium courgettes, halved lengthways and cut into roughly 2cm/戮in slices
4 garlic cloves, very thinly sliced
1 large red pepper, cut into roughly 3cm/1录in chunks
1 large yellow pepper, cut into roughly 3cm/1录in chunks
2 medium red onions, thinly sliced
400g tin chopped tomatoes
2 dried bay leaves, or 1 fresh bay leaf
salt and freshly ground black pepper
2 tsp caster sugar
6 tbsp extra virgin olive oil
1 tsp dried oregano
2 tbsp tomato pur茅e