Mediterranean Vegetable Tart

Whilst you could use mushrooms and leeks in this tart, I usually make it with courgettes, red peppers and aubergines, together with the tomatoes, for an impressive tart full of bright Mediterranean colours and flavours. Fennel too would be a good addition. It should be quartered and blanched first until reas-onably tender; otherwise, it will not cook in the same time as the other ingredients. Courgettes I blanch whole, and then slice, unless they are no more than little-finger length, in wh