Preheat oven to 190 C / Gas 5. Grease a baking dish with oil.
Clean aubergines thoroughly. Slice off stem end, cut in half lengthways, and remove the seeds. Disturbing the flesh as little as possible, make criss-cross cuts down the length of each half, add a sprinkling of salt and pepper and a pinch of finely chopped garlic.
Pack the aubergines lightly inside the greased baking dish, cut side up. Trickle a little more oil over them and bake in the preheated oven till tender, approximately 30 to 40 minutes.