Clean the eggplant, cut into approx. 1 cm thick slices and fry until golden on both sides in olive oil. Spread in gratin tins, spread the tomato sauce on top. Roughly crumble the goat cheese and sprinkle over it.
Briefly bake under the grill until the cheese is lightly browned. Drizzle the cheese with the sage oil. Garnish with the small sage leaves.