"Feminist Hulk" An-Stuffed Green Tea Cupcakes

These came out delicious, and since I've gotten multiple requests for the recipe, I thought I'd share. (An = sweet red bean paste) Note: Feminist Hulk-homage points will be increased by using purple cupcake liners, if you can find them. 

( For the an )

( For the cupcakes )

( For the frosting )

An recipe adapted from Eigo de tsukuru washoku; cupcake and frosting recipe adapted from cupcakes! by Elinor Kilvans. I was originally inspired to stuff the cupcakes by this recipe, which has chocolate cupcakes and green tea cream cheese frosting and also sounds delicious. The an recipe there is way too much work, though.