Cut the tomatoes (preferably with a slicer) into even slices. Also cut the mozzarella into slices and pluck the basil from the stems. Now fan out the tomatoes and mozzarella on a large plate.

Pour salt and pepper over the tomato and mozzarella mixture. Drizzle the olive oil and balsamic vinegar over the salad, a little more of the balsamic vinegar. Finally, sprinkle the basil leaves over the plate. Finished :)