Preheat the oven to 175°C.

Mix the flours, matcha powder, baking powder and salt in one large bowl.

In a second large bowl, using an electric mixer, whisk together the eggs, sugar, butter and vanilla.

When the egg mixture is medium density, slowly add the flour mixture. Add the white chocolate.

Make little dough balls and place them on the baking tray. Slightly flatten each ball with a spoon. Bake on the middle rack of your oven for 12–15 minutes, or until the edges are slightly golden-brownish.

Allow the cookies to cool.