Preheat the oven to 375°F (190°C). Arrange the baguette slices in a single layer on a baking sheet and toast for 5-7 minutes until golden.
In a mixing bowl, gently toss together the diced tomatoes, minced garlic, chopped basil, olive oil, and balsamic vinegar. Season with salt and pepper and let it sit for a minute.
Spoon the tomato mixture generously onto each slice of toasted bread and serve immediately.
