Cut the top off the head of garlic to expose the cloves, drizzle with 1 tablespoon of olive oil, and wrap it in aluminum foil. Place it in the oven to roast for about 30-35 minutes until soft and caramelized.
While the garlic is roasting, place the diced tomatoes in a bowl. Add the chopped basil, remaining olive oil (2 tablespoons), salt, and pepper, mixing gently to combine. If using, add a drizzle of balsamic glaze for a touch of sweetness. Set aside to let the flavors meld.
After the garlic has finished roasting, remove it from the oven and let it cool slightly. Once cool enough to handle, squeeze the roasted cloves out of their skins into a small bowl and mash them into a paste.
Arrange the baguette slices on a baking sheet. Spread a bit of the roasted garlic paste onto each slice and brush lightly with olive oil.
Toast the baguette slices in the oven for about 8-10 minutes or until golden and crispy.
Remove the slices from the oven and top each with a generous spoonful of the tomato-basil mixture.
Optionally, garnish with shavings of Parmesan cheese for added richness. Serve immediately.
Notes
Serve immediately for the best flavor and texture.