Crispy Mini Butter Cookies - Bánh quy bơ mini

The butter cookies recipe 100g room temperature unsalted butter 80g powdered sugar 25g egg white Divide the mixture into 2 equal parts For the white dough: add 65g cake flour For the chocolate dough: add 45g cake flour 20g cocoa powder The chocolate filling: 40g white chocolate 15ml heavy cream My baking and camera equipments: Thank for watching and hope you enjoy !