There is nothing quite like a warm, buttery, flaky croissant for breakfast that is freshly baked. Croissants are buttery, flaky, baked treats made with yeast-leavened laminated dough and are also called as French pastry. Croissants are often stuffed with different sweet or savory fillings. The classic sweet-filled croissants use almonds, marzipan, or chocolate, whereas savory croissants might be filled with cheese, spinach or even meat.