Clean, wash and slice the tomatoes. Drain mozzarella, cut into slices. Wash basil, cut into strips. Drizzle slices of bread with olive oil.
Season with salt and pepper. Cover with tomatoes and mozzarella, sprinkle with basil. Bake in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 5 minutes. Serve garnished with lemon and basil