01 -
In a medium bowl, whisk together the flour, cocoa powder, baking soda, baking powder, and cornstarch until evenly mixed.
02 -
In a separate large bowl, beat the softened butter with granulated and brown sugars on medium speed until light and fluffy, approximately 2 minutes.
03 -
Add eggs and vanilla or peppermint extract to the creamed mixture and beat until fully combined.
04 -
With the mixer on low, gradually add the dry ingredients to the wet mixture and beat just until combined to form the dough.
05 -
Cover the dough with plastic wrap and refrigerate for 1 hour to firm up.
06 -
Preheat the oven to 350°F (177°C) and line baking sheets with parchment paper.
07 -
Use a cookie scoop to portion 1 1/2 tablespoons of dough per ball. Roll each ball in powdered sugar to coat evenly. Arrange on prepared sheets spacing 2 inches apart.
08 -
Bake for 8 to 9 minutes, then remove from oven.
09 -
Immediately press one unwrapped Hershey’s Kiss into the center of each hot cookie.
10 -
After 2 minutes, once the chocolate has softened, gently lift each Kiss and discard the pointed tip to allow the chocolate to puddle into the cookie.
11 -
Transfer cookies to a wire rack and allow to cool completely before serving.