Preheat your oven to 400°F (200°C). Place both halves of the ciabatta bread on a large baking sheet with the cut side facing up.

In a small bowl, mix the butter and minced garlic. Spread this mixture evenly on the cut sides of the bread. Lay the mozzarella cheese slices on top, ensuring the cheese covers the bread entirely. Bake for 12-15 minutes or until the cheese is melted. Tip: Keep an eye on the bread to prevent it from browning too much.

While the bread is baking, prepare the balsamic reduction. In a small saucepan, pour the balsamic vinegar. Bring it to a boil, then reduce the heat to low. Simmer and stir occasionally until the mixture reduces by about half, approximately 5-7 minutes. Set it aside.

Once the bread is done, remove it from the oven. Arrange the tomato slices on top of the bread. Season with salt and pepper according to your taste. Sprinkle the fresh basil over the top and drizzle with the balsamic reduction.

Slice the bread and serve. Tip: For an extra kick of flavor, consider adding a sprinkle of red pepper flakes or a drizzle of olive oil before serving.