1 Combine collectively the butter, sugar, and spices: Within the bowl of a stand mixer fitted with a paddle attachment, place the butter, white sugar, brown sugar, baking powder, nutmeg, cinnamon and salt.
Combine on gradual pace till a lot of the substances are blended, then enhance to medium pace and blend till the butter is creamy and clings to the facet of the bowl, about 2 minutes.
Scrape down the edges of the bowl midway via mixing after which afterwards.
2 Whisk liquid substances: In a small bowl, add the eggnog, egg yolks, vanilla, and rum extract (if utilizing).
Beat along with a fork then drizzle the combination into the blending bowl as it’s turned on to low pace. Proceed to combine on low pace till all of the liquid is included. Scrape down the edges of the bowl.
3 Beat within the flour: Add the flour and switch the mixer to low. As soon as a lot of the flour has been absorbed, enhance the pace to medium low till no dry flour stays.
Scrape down the edges of the bowl a few times to verify the dough is totally homogenized.
4 Put together the dough to relax: Scrape out the dough onto some plastic wrap and wrap tightly. Pat the dough down right into a 1-inch thick layer. The dough can be sticky so, use the plastic wrap to assist pat it down.
5 Chill the dough: Refrigerate the dough for at the least 2 hours or in a single day.
6 Preheat the oven and put together the baking sheets: As soon as the dough has chilled, preheat the oven to 325°F.
Line two baking sheets with parchment paper or silicon baking mats.
7 Form the cookies: Break off small chunks of the dough and roll them into 1-inch balls.
Place them on the baking sheet, about 2 inches aside.
8 Bake the cookies: Bake within the oven for 11 to 13 minutes, or till the bottoms are beginning to flip golden brown.
9 Cool: Let the cookies relaxation on the nice and cozy baking sheet for five minutes earlier than shifting them to a wire cooling rack to chill fully.
Repeat with baking the remaining cookies.
10 Make the glaze: As soon as the cookies have cooled fully make the glaze by inserting the sifted powdered sugar in a medium-sized bowl. Add the eggnog, vanilla extract, and rum extract (if utilizing) and blend collectively.
11 Glaze the cookies: Drizzle the glaze over the cookies. Then garnish every cookie with a sprinkling of recent grated nutmeg if you want.
12 Serve with an enormous glass of actual milk, and luxuriate in!