Caprese Panini Sandwich

Name: Caprese Panini Sandwich
Prep time: 10 min
Cook time: 5 min
Total time: 15 min
Yield: 2
Ingredients: Ingredients; 4 slices ciabatta bread or focaccia, cut 1/2-inch thick; 8 oz fresh mozzarella cheese, sliced 1/4-inch thick; 2 large ripe tomatoes, sliced 1/4-inch thick; 1/2 cup fresh basil leaves; 3 tablespoons extra virgin olive oil, divided; 2 tablespoons balsamic glaze; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 2 tablespoons butter, softened