01 - In a large bowl, beat the unsalted butter and granulated sugar until light and fluffy.
02 - Add the egg, vanilla extract, and peppermint extract, mixing until fully combined.
03 - In a separate bowl, whisk together the all-purpose flour, baking powder, and salt.
04 - Gradually add the dry mixture to the wet ingredients, stirring until a soft dough forms.
05 - Separate the dough into two equal portions; tint one with red food coloring gel, kneading to distribute color evenly while leaving the other plain.
06 - Cover both dough portions and refrigerate for at least 1 hour to firm.
07 - Heat the oven to 350°F and line baking sheets with parchment paper.
08 - Pinch a heaping teaspoon from each dough color, roll each into a 4-inch rope, twist ropes together, and form into cane or swirl shapes.
09 - Place cookies 2 inches apart on prepared sheets; optionally sprinkle with crushed peppermint candies.
10 - Bake for 9 to 11 minutes until edges are lightly golden and cookies are set.
11 - Let cookies cool on the baking sheet for 2 minutes before transferring to a wire rack to cool completely.