Crostini are a group of Italian appetizers consisting of small pieces of toasted or grilled bread topped with a variety of flavorful toppings. Crostini are believed to have originated during the Middle Ages, when poor Italian peasants used to eat their food off of bread instead of plates.
The bread was often stale, so it had to be soaked in a liquid such as wine to make it edible. Today, crostini are topped with virtually anything from olive oil, fresh herbs, and garlic to cheeses, olives, spinach, and tomatoes. They can be served as bar snacks, appetizers, or in soups, and in some cases, crostini can be served as a side dish with steak tartare.