01 - Whisk together the all-purpose flour, baking powder, and salt in a medium bowl. Set aside.
02 - Beat the unsalted butter and granulated sugar in a large bowl until light and fluffy, approximately 2 to 3 minutes.
03 - Add the egg, vanilla extract, and peppermint extract to the butter mixture and blend until smooth.
04 - Gradually add the dry ingredients to the wet mixture, stirring just until combined.
05 - Cover the dough and refrigerate for at least 30 minutes until slightly firm.
06 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
07 - Scoop tablespoon-sized portions of dough and roll into balls. Place them 2 inches apart on the prepared baking sheets.
08 - Gently flatten each ball with your palm. Sprinkle crushed candy canes on top, pressing slightly to adhere.
09 - Bake for 9 to 11 minutes, or until the edges turn lightly golden.
10 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
11 - Melt white chocolate chips and drizzle over cooled cookies for added decoration and flavor.