Hopia, (- the name it is known by in the Philippines) pia or bakpia (- the name it is known by in Indonesia) is a popular Indonesian and Philippine bean-filled moon cake-like pastry originally introduced by Fujianese immigrants in the urban centers of both nations around the past centuries. It is a widely available inexpensive treat and a favoured gift for families, friends and relatives.
In Indonesia, it is also widely known as bakpia pathok, named after a suburb of Yogyakarta which specialises in the pastry. These sweet rolls are similar to bigger Indonesian pia, the only difference being the size.