Preheat your oven to 350°F (175°C).
In a bowl, whisk together flour, baking powder, and salt.
In a separate bowl, cream together the softened butter and granulated sugar until light and fluffy.
Beat in the egg, vanilla extract, and peppermint extract.
Gradually add the dry ingredients to the wet mixture, mixing until combined.
Divide the dough into two portions.
Color one portion with red food coloring and the other with green.
Roll out each colored dough between parchment paper until ¼ inch thick.
Cut out circles from both doughs and layer them to form a peppermint swirl design.
Place the cookies on a baking sheet lined with parchment paper and bake for 12-15 minutes or until lightly golden.