Place tomatoes, shallots and garlic in a bowl. Season to taste with salt and pepper. Add balsamic glaze and olive oil and stir to combine. Set aside until ready to serve.
Right before serving add basil and stir.
To Make Crostini
Preheat oven to 450 and slice bread in ¼ inch slices.
Brush both sides of bread with olive oil and place on sheet pan.
Bake bread for 6-9 minutes or until desired level of toasted color has been reached.
Remove from oven and set aside.
Notes
Don't have any balsamic glaze on hand? You can easily reduce some balsamic vinegar and use that instead.
Be sure to use GOOD bread for the crostini, it really makes a different.
You can use any type of tomato, the fresher the better. Don't forget to seed it to keep the juices to a minimum.
To keep the bright green color of the basil, wait to add it until right before serving.