For the sandwich:
1 large rustic round loaf of bread, cut into 4 thick slices
1 ball fresh mozzarella, sliced 1/4-inch thick
Extra virgin olive oil
For tomato salad topping:
2 large tomatoes, chopped
2 tablespoons fresh basil, chopped
2 tablespoons extra virgin olive oil
1 tablespoon balsamic vinegar
Salt and pepper