In a mixer, mix butter, matcha, sugar, and salt until light and fluffy.

Add flour and pulse until the mixture forms a soft dough.

Roll dough into a log, wrap in parchment paper, and chill for 1 hour, or freeze for up to 1 month.

Preheat oven to 350°F

Line 2 baking sheets with parchment paper.

Slice cookies about ⅓-inch thick. Place on lined sheets about 1 inch apart.

Sprinkle tops with sugar and bake for 12 to 14 minutes.

Serve with tea!