01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, and salt until evenly mixed.
03 - In a large bowl, beat the butter with granulated and brown sugars until light and fluffy, about 2 to 3 minutes.
04 - Add eggs one at a time, mixing well after each addition. Stir in vanilla and peppermint extracts.
05 - Gradually add the dry mixture to the wet ingredients, stirring just until combined.
06 - Fold in chocolate chips and chopped peppermint bark evenly into the dough.
07 - Drop heaping tablespoons (about 2 tablespoons each) of dough onto the prepared sheets, spacing cookies 2 inches apart.
08 - If desired, sprinkle the tops of the cookies with crushed peppermint candies.
09 - Bake for 10 to 12 minutes, until edges are lightly golden and centers are set.
10 - Allow cookies to cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely.