This video shows you how to make moist and rich matcha chocolate cookies. First, mix room temperature unsalted butter and granulated sugar until it becomes pomade-like, then add beaten egg yolk and mix further. Sift in cake flour, cocoa powder, and baking powder, and cut and mix without kneading to make the dough. Wrap the dough in plastic wrap and let it rest in the refrigerator for at least an hour, then roll it out thinly, cut out shapes with a cookie cutter, and bake in a preheated oven at 170°C for 20 minutes. Next, melt finely chopped white chocolate in the microwave and add matcha powder to make the matcha chocolate filling. Sandwich the filling between the baked cookies, and you'll have fragrant matcha chocolate cookies. This is an easy recipe that is perfect for gifts.