Preheat your oven to 375°F. Arrange the baguette slices on a baking sheet and brush each piece with melted butter.
Toast the Bread
Bake for 6-8 minutes until golden brown and crispy.
Prepare the Tomato Mixture
In a mixing bowl, combine diced Campari tomatoes, basil, garlic, olive oil, balsamic vinegar, salt, and pepper. Let it sit for about 5 minutes to allow the flavors to meld.
Assemble & Serve
Spoon the tomato mixture onto the toasted baguette slices and sprinkle with Parmesan cheese if using. Serve immediately and enjoy!