In a bowl, combine diced tomatoes, basil, garlic, olive oil, salt, and pepper.
Let the mixture sit for about 10 minutes to enhance flavors.
Preheat your oven to 400°F (200°C).
Slice the baguette into 1-inch thick pieces.
Arrange the bread slices on a baking sheet and brush with olive oil.
Toast the bread in the oven for 5-7 minutes until golden brown.
Remove the bread from the oven and let cool slightly.
Top each slice of toasted bread with the tomato mixture.
Optional: Add a slice of mozzarella cheese on top.
Serve immediately for the best texture.