In a large bowl, whisk together the eggnog and instant vanilla pudding mix until completely smooth.
Gently fold in the thawed whipped topping and 1/4 teaspoon of the ground nutmeg until just combined and the mixture is light and fluffy.
Carefully pour the creamy eggnog filling into the graham cracker crust and spread it evenly with a spatula.
Sprinkle the remaining 1/4 teaspoon of nutmeg on top for a festive finish.
Refrigerate the pie for at least 5 hours, or preferably overnight, until it is firm and perfectly set. Serve chilled and savor this easy holiday treat!
Notes
Nutrition per serving: Calories: 216kcal, Total Carbs: 24g, Net Carbs: 23g, Fats: 11g, Protein: 4g.