Dorayaki

It is also calld "Mikasa" in Kansai region(western part of Japan).
Dorayaki is a Japanese traditional sweet which An(Azuki bean paste) is put between two pancake which is made from egg, wheat flour, sugar, honey, and so on.

An is also called Anko.
It is an ingredient for many traditional Japanese sweet.
Usually, An is made from Azuki beans(red beans) and sugar.

By the way, it is famous that Dorayaki is the favorite of "Doraemon".