Make the tomato salad

• Dice the tomatoes and thinly slice the red onion.
• Add the tomatoes, red onion, grated garlic, torn basil, olive oil and red wine vinegar to a bowl.
• Season with salt and black pepper and toss well.

Let the salad soak

• Let the tomato salad sit so the juices release and the flavors come together.

Assemble the sandwiches

• Spoon the tomato salad onto the halved ciabatta so the juices soak into the bread.
• Top with the sliced fresh mozzarella.
• Close the sandwiches and press gently.