Start by adding your pudding mix, eggnog, nutmeg, and Cool Whip to a large mixing bowl.
Mix with a hand mixer until smooth and fluffy.
Pour into your prepared pie crust and smooth out evenly.
Place in the refrigerator for 4 hours or overnight. I prefer overnight best.
Top with Cool Whip and cinnamon or nutmeg. Serve and enjoy! Your holiday guests are sure to think you spent hours on this.