Preheat oven to 325 degrees F (165 degrees C). Grease baking sheets or line with parchment paper.
Sift flour, matcha, baking soda, and salt together in a bowl. Beat brown sugar, butter, and white sugar together in a large bowl using an electric mixer until blended; beat in vanilla extract, egg, and egg yolk until light and creamy.
Mix flour mixture into creamed butter mixture until dough is just blended; fold in chocolate chips using a wooden spoon. Drop cookie dough, 1 heaping tablespoon per cookie, onto the prepared baking sheet 2 to 3 inches apart.
Bake in the preheated oven until edges are lightly browned, 8 to 10 minutes. Cool cookies on the baking sheet for 2 to 3 minutes before transferring to a wire rack to cool completely.
Nutritional Facts
Per 24 servings
Calories: 210
Carbohydrate: 28g
Fat: 10g
Fiber: 0g
Protein: 2g
Sugar: 20g
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