01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium mixing bowl, whisk together all-purpose flour, baking soda, and salt until thoroughly blended. Set aside.
03 - In a large bowl, beat softened unsalted butter, granulated sugar, and brown sugar with an electric mixer or sturdy whisk until mixture is light and creamy in texture.
04 - Add eggs one at a time, beating well after each addition. Blend in vanilla extract and peppermint extract until combined.
05 - Gradually add the dry ingredients to the wet ingredients, mixing just until a cohesive dough forms. Avoid overmixing.
06 - Gently fold in semi-sweet chocolate chips and crushed peppermint candies until evenly distributed throughout the dough.
07 - Scoop tablespoon-sized portions of dough onto prepared baking sheets, spacing each ball about 2 inches apart to allow for spread.
08 - If desired, sprinkle a small amount of additional crushed peppermint on top of each dough ball for garnish.
09 - Bake in preheated oven for 9 to 11 minutes, or until the cookie edges are lightly golden and the centers remain soft.
10 - Allow cookies to cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely before serving or storing.