01 - Preheat oven to 350°F. Line two baking sheets with parchment paper for easy cleanup and to prevent sticking.
02 - In a medium bowl, whisk together flour, baking powder, baking soda, and salt until well blended. Set aside for later use.
03 - In a large bowl, beat softened butter, granulated sugar, and brown sugar with electric mixer until light and fluffy, approximately 2-3 minutes.
04 - Add eggs one at a time, beating thoroughly after each addition. Mix in ube halaya, vanilla extract, and ube extract until completely combined and mixture turns evenly purple.
05 - Gradually add dry ingredient mixture to wet mixture, mixing until just combined. Avoid overmixing to prevent tough cookies.
06 - Gently fold white chocolate chips into dough until evenly distributed throughout.
07 - Drop tablespoon-sized portions of dough onto prepared baking sheets, leaving 2 inches of space between each cookie to allow for spreading.
08 - Bake for 10-12 minutes until edges are set but centers remain slightly soft. Watch closely to avoid overbaking.
09 - Let cookies rest on baking sheet for 5 minutes to set, then transfer to wire rack to cool completely before storing or serving.