In a bowl whisk together all purpose flour, cornstarch, matcha, sea salt and baking powder.
Wet Ingredients
In a bowl, beat the butter, vanilla and sugar for about 2-5 minutes or until the batter is fluffy and light in color. Add the milk and mix until the batter is creamy and blended.
Fold the dry ingredients, white chocolate chips into the creamy mixture, folding until everything is well incorporated evenly.
Preheat the oven to 375℉. while the oven preheats keep the mixture refrigerated.
Scoop the dough into 10-11 small balls. Space out the dough on two parchment lined baking sheets( if necessary) evenly so there is enough space between the cookies. Bake for 12-14 minutes at 375°F, or until the cookies have spread out and the edges are slightly crisp.
Remove the cookies from the oven, tap the tray on the counter a couple of times to further spread the cookies. Cool before enjoying.