Preparations: Line a 3 baking sheets with parchment paper. Preheat the oven to 180C / 350F.
In a mixing bowl, mix brown sugar, butter, and granulated sugar until combined then mix in the egg.
⅓ cup granulated sugar, ½ cup light brown sugar, ¾ cup butter, 1 egg
Add the eggnog to the mixture, whisk. Then, stir in the flour, ground cinnamon, baking powder, and nutmeg.
½ cup eggnog, 2 cups plain flour, ½ teaspoon ground cinnamon, ¼ teaspoon nutmeg, 2 teaspoon baking powder
Now, wet your hands with some water and scoop up a tablespoon of the batter. Roll it between your wet hands then put onto the baking sheet. Repeat until all the batter finishes.
Bake for about 15 minutes then let the cookies cool down completely.
Making the Topping
Microwave the white chocolate for 30-40 seconds then put it in a piping bag and drizzle the cookies then sprinkle some ground cinnamon on the top.
100 g white chocolate, 1 teaspoon ground cinnamon
Notes
The cookies will come out of the oven very soft, make sure to let them cool for 10-20 minutes before moving them from the baking sheet.
Use a small cookie scoop to make all the cookies the same size to cook equally.