Preheat your oven to 350°F. Line a cookie sheet with parchment paper.

In a medium bowl, whisk together the flour, baking powder, baking soda and salt. Set aside.

In a food processor, crush your graham crackers into fine crumbs. A fist, bad day and ziploc bag should work too.

In a large bowl, using an electric hand mixer, beat the butter, sugar and 1/2 cup of the graham cracker crumbs until fluffy, 2 minutes. Add in the egg and vanilla and beat until incorporated. Add the flour mixture in thirds and beat until just combined.

Shape the dough into small balls and coat in remaining graham cracker crumbs. Bake for 10-12 minutes or until they crack on sides. Remove from oven and turn on the broiler.

Let the cookies cool for 5 minutes and then gently press down a marshmallow half (cut side down) into each cookie. Broil the cookies for 30 seconds until marshmallow edges turn golden. Immediately insert a Hershey's Kiss into each marshmallow.