01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - Whisk together flour, baking soda, and salt in a medium bowl.
03 - Beat softened butter with granulated and brown sugars in a large bowl until light and fluffy, about 2 to 3 minutes.
04 - Incorporate eggs one at a time, beating well after each addition. Mix in vanilla and peppermint extracts.
05 - Gradually add the dry ingredients to the wet mixture, stirring just until evenly combined.
06 - Gently fold in semisweet chocolate chips, optional white chocolate chips, chopped mint, and crushed peppermint candies.
07 - Scoop tablespoon-sized portions onto prepared baking sheets, spacing about 2 inches apart.
08 - Bake for 9 to 11 minutes until edges are lightly golden and centers remain soft.
09 - Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.