Pain au chocolat is a popular French pastry made from a rich, buttery dough known as puff pastry. It is filled with dark chocolate pieces, which melt during baking, creating a deliciously gooey center. The pastry is typically rectangular in shape and has a flaky, golden-brown exterior. Often enjoyed as a breakfast item or snack, pain au chocolat is commonly found in bakeries across France and other countries. It is similar to a croissant, but the key difference lies in the chocolate filling. This delightful treat is loved for its combination of textures and flavors.