1. Preheat your oven to 425°F.
2. Slice a French baguette or crusty bread into ½-inch thick pieces.
3. Mix olive oil, salt, pepper, and garlic powder, then brush the mixture onto both sides of the bread slices.
4. Place the bread slices on a parchment-lined baking sheet and toast them in the oven for 6–9 minutes, flipping halfway through, until golden and crispy.
5. Dice fresh tomatoes into small cubes and strain any excess liquid to avoid sogginess.
6. Combine the diced tomatoes with minced garlic, chopped fresh basil, olive oil, balsamic vinegar, salt, and black pepper in a mixing bowl.
7. Stir the tomato mixture well and allow it to marinate for at least 30 minutes to enhance flavors.
8. Once the bread is toasted and slightly cooled, spoon the marinated tomato mixture onto each slice.
9. Drain any remaining liquid from the topping before placing it on the bread to keep the toast crisp.
10. Sprinkle grated Parmesan cheese, small chunks of mozzarella, or desired garnishes like parsley, red pepper flakes, or balsamic glaze over the assembled bruschetta.
11. Transfer the bruschetta to a serving platter.
12. Serve immediately as a delicious appetizer or snack.