Cut the tomatoes in half.
In a large bowl mix together the tomatoes, fresh basil, garlic, balsamic vinegar and black pepper until combined. Salt to taste.
Cover the mixture with foil or place in a food storage type container, and place in the refrigerator for at least 15 minutes.
Preheat the oven to broil.
Place the baguette slices in a single layer on a large baking sheet. Brush extra virgin olive oil evenly on each side with a pastry or marinade brush.
Place the pan in the oven, cook on each side for about 1 to 1 & ½minutes or until both sides of the bread pieces are golden brown.
Remove the pan from the oven using an oven mitt.
Next, place a slice of cheese on the bread slices and place the pan back into the oven.
Cook the French baguette slices for about 2 to 3 minutes or until the cheese melts.
Remove the pan from the oven using an oven mitt.
Top the toasted baguette with the tomato mixture and serve immediately.