01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together all-purpose flour, baking soda, and salt. Set aside.
03 - In a large bowl, beat softened unsalted butter, granulated sugar, and brown sugar until light and creamy using an electric mixer or whisk.
04 - Add eggs one at a time, beating well after each addition. Mix in vanilla extract and peppermint extract until fully combined.
05 - Gradually add the whisked dry ingredients to the creamed mixture, mixing until just combined without overmixing.
06 - Fold in semi-sweet chocolate chips and crushed peppermint candies until evenly distributed.
07 - Scoop dough into 1-tablespoon balls and arrange on prepared baking sheets with 2 inches of space between each.
08 - If desired, sprinkle additional crushed peppermint over each cookie dough ball for decoration.
09 - Bake in preheated oven for 9 to 11 minutes, or until edges are lightly golden while centers remain soft.
10 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.