01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper to prevent sticking and ensure easy cleanup.
02 - Whisk together all-purpose flour, baking powder, baking soda, and salt in a medium bowl until evenly distributed. Set aside for later use.
03 - Beat softened butter, granulated sugar, and brown sugar in a large bowl until light and fluffy, approximately 2-3 minutes.
04 - Add eggs one at a time, mixing thoroughly after each addition. Blend in ube halaya, vanilla extract, and ube extract until fully incorporated and dough achieves uniform purple color.
05 - Gradually add dry ingredients to wet mixture, mixing until just combined. Avoid overmixing to prevent tough cookies.
06 - Gently fold white chocolate chips into dough using a spatula until evenly distributed throughout.
07 - Scoop tablespoon-sized dough portions onto prepared baking sheets, leaving 2 inches of space between each cookie to allow for spreading during baking.
08 - Bake for 10-12 minutes until edges are set but centers remain soft for optimal chewy texture.
09 - Let cookies rest on baking sheet for 5 minutes before transferring to wire rack to cool completely.