01 -
Turn your oven to 350 degrees. Line a large baking sheet with parchment paper and set it aside.
02 -
Sift together the flour, cocoa powder, baking soda, and salt in a medium bowl. Set this aside for now.
03 -
Using a hand mixer on medium speed, cream together the butter, brown sugar, and granulated sugar for 2 to 3 minutes until the mixture is light and fluffy.
04 -
Add the whole egg, egg yolk, vanilla extract, and peppermint extract to the bowl. Mix just until everything is fully combined.
05 -
Add the dry ingredients to the wet ingredients and mix on low speed just until combined. The dough will be pretty thick.
06 -
Gently fold in the chocolate chips until they're evenly distributed throughout the dough.
07 -
Using a 2½ tablespoon cookie scoop, drop 8 to 9 dough balls onto your prepared baking sheet, leaving about 2 inches between each one so they have room to spread.
08 -
Bake on the center rack of your oven for 10 to 12 minutes, just until the center of each cookie is set. Don't overbake - they should still look slightly underdone in the middle.
09 -
If using crushed candy cane, sprinkle it over the tops of the warm cookies right when they come out of the oven.
10 -
Let the cookies cool on the baking sheet for 3 to 4 minutes before moving them to a wire rack to cool completely.
11 -
Repeat the scooping, baking, and cooling process until all your dough is used up. Transfer to a serving platter and enjoy.