01 - Preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper.
02 - Whisk together the flour, baking soda, and salt in a medium bowl. Set aside.
03 - In a large bowl, beat the softened butter with granulated and brown sugars until light and fluffy, about 2 minutes.
04 - Beat in the eggs one at a time, scraping down the bowl between additions. Mix in peppermint extract, vanilla extract, and food coloring if using until combined.
05 - Gradually add the dry ingredients to the wet mixture, stirring just until incorporated.
06 - Gently fold the semi-sweet chocolate chips and chopped mint chocolate into the dough.
07 - Drop tablespoon-sized portions of dough onto prepared baking sheets, spacing each about 2 inches apart.
08 - Bake for 9 to 11 minutes until edges are lightly golden and centers remain slightly soft.
09 - Let cookies cool on the baking sheets for 5 minutes, then transfer to wire racks to cool fully.