Eggnog Cookies are luscious, full of flavor and have eggnog mixed into the cookies and frosting. These cookies come straight from the North Pole and are the best way to use leftover eggnog!
Sift or whisk together the flour, coarse salt and baking soda in a medium bowl. Set aside.
In a large mixing bowl or a stand mixer fitted with a paddle attachment, cream the butter and brown sugar until combined. Beat in the egg yolks, eggnog and rum extract.
Gradually fold in the flour mixture until a sticky, soft dough forms. Cover and refrigerate for 1-2 hours.
Preheat the oven to 350°F.
Generously flour a work surface and roll the dough to about 1/2 inch thick. Using a 2 1/2 inch cookie cutter, round or another shape, cut out the cookies and place on a parchment lined baking sheet.
Bake the cookies for 9-12 minutes. Baking times may vary depending on ovens.
Allow the cookies to cool for 5 minutes then carefully remove to a cooling rack.
When all the cookies are cool, assemble the frosting. In a medium mixing bowl, beat the butter until soft and fluffy. Add the rum extract, nutmeg, cinnamon and eggnog until smooth.
Slowly add the powdered sugar until smooth and fluffy.
Frost the cookies and allow to set in a single layer. When frosting sets they can be stacked and stored at room temperature in an airtight container separated by parchment paper. If you plan to freeze the cookies, do so before frosting. When you defrost, then assemble and frost.
If you've tried this recipe, please come back and let us know how they were in the comments or ratings!