Preheat your oven to 350°F (175°C).

In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy.

Add the eggs one at a time, mixing well after each addition, and then stir in the vanilla extract.

In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in the peppermint baking chips or crushed candy canes.

Scoop tablespoon-sized balls of dough and place them on a baking sheet lined with parchment paper, spacing them about 2 inches apart.

Bake in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still soft.

Remove the cookies from the oven and immediately press a chocolate peppermint kiss into the center of each cookie.

Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.