Step 1

In a large bowl, whisk together the flour, baking soda, baking powder, cinnamon, nutmeg, and salt.

Step 2

In another bowl, cream butter, granulated sugar, and brown sugar until light and fluffy using a mixer.

Step 3

Add the egg and vanilla extract, mixing until well combined.

Step 4

Gradually mix in the eggnog, followed by the dry ingredients. Continue until a smooth dough forms.

Step 5

Use a medium cookie scoop to form 2-tablespoon-sized dough balls.

Step 6

Place the dough balls 2 inches apart on the baking sheets. Flatten each with the bottom of a glass sprayed with non-stick spray to about 1/2 inch thickness.

Step 7

Whisk powdered sugar and eggnog until smooth.

Step 8

Drizzle the glaze over the cooled cookies and let it set for 15 minutes. Cookies can be stacked after one hour.