Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
In a large mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy, using an electric mixer on medium speed.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully combined.
In another bowl, whisk together the flour, matcha powder, baking soda, and salt until well blended.
Gradually add the dry ingredients to the wet ingredients, mixing just until combined. Be careful not to overmix.
Fold in the white chocolate chips until evenly distributed throughout the dough.
Using a tablespoon or cookie scoop, drop rounded balls of dough onto the prepared baking sheets, leaving enough space between each cookie for spreading.
If desired, sprinkle crushed pistachios on top of the cookie dough before baking for an extra crunch and a pop of color.
Bake in the preheated oven for 10-12 minutes or until the edges are lightly golden while the centers remain soft.
Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.
Notes
Optional crushed pistachios can be added for extra texture.