Preheat the oven to 350 degrees. Coat both sides of sliced baquette with olive oil cooking spray. Place on a rack and cook for 5 minutes or until crisp and warm. Set aside to cool slightly.
Place the diced tomatoes, chopped basil, and diced mozzarella together in a bowl; add the minced garlic, sea salt and freshly cracked pepper, to taste, white balsamic vinegar, and olive oil. Mix until evenly combined.
Place spoonfuls of the caprese salad on each slice of baguette. Serve immediately. Enjoy.