01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the all-purpose flour, baking soda, and salt. Set the mixture aside.
03 - In a large bowl, beat the softened unsalted butter, granulated sugar, and brown sugar until the mixture is light and creamy.
04 - Add the eggs one at a time to the creamed mixture, mixing well after each addition. Blend in the vanilla and peppermint extracts until just combined.
05 - Gradually add the dry ingredients to the wet ingredients, mixing gently until just combined and no streaks of flour remain.
06 - Gently fold in the semi-sweet chocolate chips and crushed peppermint candies until evenly distributed throughout the dough.
07 - Scoop tablespoon-sized balls of dough onto the prepared baking sheets, spacing them about 2 inches apart.
08 - If desired, sprinkle additional crushed peppermint over the tops of the dough balls for a festive finish.
09 - Bake in the preheated oven for 9 to 11 minutes, or until the edges are lightly golden and the centers remain soft.
10 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely before serving.