A simple, perfect Caprese sandwich with mozzarella, tomato, basil and balsamic on a good baguette is a five-minute, no-cook summer lunch or dinner. As my daughter would say, BOOM.
Cut the baguette in half lengthwise and lay cut sides up on a cutting board.
In a small bowl, stir together the olive oil and vinegar with a fork until emulsified. Pour half the dressing over each piece of baguette and spread evenly.
Place the mozzarella slices in a single layer across the bottom half of baguette, followed by the tomato slices, followed by the basil leaves. Sprinkle with salt and pepper.
Close the sandwich, cut into pieces, and serve.