Combine butter, eggs, eggnog & extract in a large mixing bowl & beat until smooth.
Add in cake mix, nutmeg & baking powder & mix until just combined.
Chill the dough in the refrigerator for at least 90 minutes so that it is less sticky & easier to handle when scooping.
Preheat the oven to 350 degrees.
Scoop the dough into small balls & then roll them in a bowl of granulated sugar & place them on a parchment-lined baking sheet.
Slightly flatten each ball so they bake to a perfect dome shape.
Bake 10-12 minutes or until edges are firm & golden brown.
Remove & transfer to a wire rack to cool.