This Caprese sandwich is the BEST summer lunch! Because the ingredients here are so simple, each one really shines through. Make sure to use the best tomatoes, basil, mozzarella, and bread you can find!
Assemble the sandwiches on the focaccia with the arugula, mozzarella, and tomato slices. Add the roasted tomatoes and a few pickled onions, if desired.
Top with basil leaves and a drizzle of olive oil. Season with salt and pepper.
Notes
For a vegan version, use sliced avocado and a slather of vegan pesto in place of the cheese.