01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, baking powder, baking soda, and salt in a medium bowl. Set aside.
03 - Beat softened butter, granulated sugar, and brown sugar in a large bowl until light and fluffy, about 2-3 minutes.
04 - Add eggs one at a time, beating well after each addition. Mix in ube halaya, vanilla extract, and ube extract until fully combined and dough is evenly purple.
05 - Gradually add dry ingredients to wet mixture, mixing until just combined. Avoid overmixing.
06 - Gently fold white chocolate chips into the dough.
07 - Scoop tablespoon-sized portions onto prepared baking sheets, spacing 2 inches apart.
08 - Bake for 10-12 minutes until edges are set but centers remain soft.
09 - Let cookies cool on baking sheet for 5 minutes, then transfer to wire rack to cool completely.