Preheat your oven to 350°F. Lightly spray a mini muffin pan with nonstick cooking spray so the cookies don’t stick. Place one piece of cookie dough into each muffin cup. Bake for 15 minutes, or until the cookies puff up and turn golden.
While the cookies are still warm, gently press down the center of each cookie using a muddler or the back of a small spoon to make a cup shape. Put the pan in the fridge for 20 minutes. This helps the cookies firm up and makes them easier to take out of the pan.
Once chilled, carefully take the cookie cups out of the pan. Use a piping bag or spoon to add a small amount of frosting into each cookie cup.
Sprinkle red, green, and white nonpareils on top for a festive look.
Finish by placing a Hershey’s Kiss in the center of each cookie.