Preheat oven to 350F and line a muffin pan with muffin liners.
In a medium bowl sift together flour, baking powder, salt and ntemug add sugar and mix to incorporate.
In a large measuring cup mix together the melted butter, eggs and eggnog.
Pour the eggnog mix to the flour and mix just to combine, lumpy mixture is ok, do not over mix.
Warm the chocolate hazelnut spread in the microwave for about 30 seconds.
Pour batter into muffin tins slightly over 3/4 full, then drizzle one tablespoon of the chocolate spread.
Use a knife or a took pick to swirl the hazelnut spread on top of the muffin batter.
Bake for 18-24 minutes, or until a toothpick comes out from the center of the muffins with a few moist crumbs. Remove from the oven and allow 5 minutes to cool.