Preheat the oven to 350°F (175°C).

In a mixing bowl, whisk together the flour, baking soda, and salt.

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

Beat in the egg, vanilla extract, and peppermint extract until well combined.

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

Scoop tablespoon-sized portions of dough and roll into balls.

Place the dough balls on a baking sheet lined with parchment paper, spacing them about 2 inches apart.

Bake in the preheated oven for 8-10 minutes, or until the edges are lightly golden.

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

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