01 - Preheat oven to 350°F. Line two baking sheets with parchment paper for easy cleanup and to prevent sticking.
02 - Whisk together gluten-free flour, matcha powder, baking soda, and salt in a medium bowl until thoroughly blended.
03 - Beat softened butter, granulated sugar, and brown sugar in a large bowl until light and fluffy, approximately 2 minutes.
04 - Mix in egg and vanilla extract until completely incorporated into the butter mixture.
05 - Gradually add dry ingredients to wet mixture, stirring just until combined. Avoid overmixing to prevent tough cookies.
06 - Gently fold white chocolate chips into the dough until evenly distributed.
07 - Drop rounded tablespoons of dough onto prepared baking sheets, spacing 2 inches apart to allow for spreading.
08 - Bake for 10-12 minutes until edges are set and centers remain slightly soft for chewy texture.
09 - Let cookies rest on baking sheets for 5 minutes, then transfer to wire rack to cool completely.