Wash aubergines and divide them in two, in the direction length (chef etoile paris). Deposit them in a dish to be roasted. Wash 2 tomatos and peel onion. Slice thinly the whole and to strew aubergines with them. Season salt, of pepper of the mill and thyme. Pour the olive oil on aubergines. Put to cook in a hot oven with 180 degrees, during 1:15 at 1:30. Once the aubergines are cooked, withdraw the pulp of the skin using a spoon.