01 - In a medium bowl, whisk together flour, baking soda, and salt until evenly combined.
02 - Using an electric mixer, beat softened butter with brown sugar and granulated sugar on medium speed until light and fluffy, about 3 minutes.
03 - Beat in the egg and vanilla extract until fully incorporated.
04 - Gradually add dry ingredients into the wet ingredients, mixing on low speed until just combined.
05 - Gently fold in semi-sweet chocolate chips and crushed peppermint candy until evenly distributed.
06 - Cover the dough and refrigerate for at least 1 hour to enhance flavor and texture.
07 - Preheat oven to 350°F (177°C). Line baking sheets with parchment paper.
08 - Using a cookie scoop, drop rounded tablespoons of dough onto prepared sheets, spacing 2 inches apart. Bake for 10 to 12 minutes or until edges are lightly golden.
09 - Allow cookies to cool on baking sheets for 5 minutes before transferring to wire racks to cool completely.