01 - Preheat your oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
03 - In a large bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes.
04 - Add the eggs one at a time, mixing well after each addition. Stir in mint extract, vanilla extract, and green food coloring until evenly combined.
05 - Gradually add the dry ingredients to the wet mixture, mixing just until incorporated.
06 - Fold in the chocolate chips and chopped chocolate if using.
07 - Using a tablespoon or cookie scoop, drop dough onto prepared baking sheets, spacing cookies about 2 inches apart.
08 - Bake for 9-11 minutes, or until the edges are set and the centers are still soft.
09 - Let cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.