Hamantaschen are traditional Purim cookies that are shaped like triangles and filled with various sweet fillings such as fruit preserves, chocolate, or poppy seed paste. The dough is made from a combination of flour, sugar, butter, and eggs, and is then rolled out and cut into circles. The filling is placed in the center of each circle, and the dough is folded up to create a triangular shape. The cookies are then baked until golden brown and delicious. Hamantaschen are a beloved treat during Purim and are often shared with friends and family.