Preheat your grill or broiler to medium-high heat.
In a medium bowl, gently combine the chopped tomatoes, chopped Kalamata olives, and minced fresh parsley or basil.
Season with salt and freshly ground black pepper to your liking.
Set the topping aside to allow the flavors to meld.
Lightly brush both sides of each slice of bread with extra-virgin olive oil.
Grill or broil the bread for 1-2 minutes per side, or until it's golden brown and lightly toasted.
Keep a close eye on it to prevent burning.
Immediately after toasting, take a halved garlic clove and rub its cut side over one surface of each warm bread slice. The heat from the bread will melt the garlic slightly and infuse it with incredible flavor.
To serve, pile a generous spoonful of the tomato and olive mixture onto each slice of garlic-rubbed toast. Alternatively, arrange the toast on a platter with the topping in a separate bowl for a 'build-your-own' experience.
Don't toast the bread too far in advance. Bruschetta is best when the bread is still warm and crisp, providing a wonderful contrast to the cool, fresh topping.