Pop the aubergine on a baking tray with a drizzle of olive oil, a pinch of salt and black pepper. Grill for 8-9 mins on each side. Remove from your grill and leave to the side (leave your grill on). The aubergine slices should be browned and soft. If they aren’t, grill them for a little longer. If they are getting brown too quickly, turn the heat down a little.