Creating Eggnog Cheesecake Bars is straightforward when you follow these simple steps:

1. Preheat Oven: Preheat your oven to 325°F (160°C). Grease a 9×13 inch baking dish.
2. Prepare Crust: In a mixing bowl, combine graham cracker crumbs, melted butter, sugar, and cinnamon. Mix until well combined.
3. Press Crust: Press the mixture firmly into the bottom of the prepared baking dish to form an even layer.
4. Bake Crust: Bake the crust in the preheated oven for 10 minutes. Remove and let cool slightly.
5. Mix Filling: In a large bowl, beat the softened cream cheese with sugar until smooth. Add eggnog, eggs, vanilla extract, nutmeg, and cinnamon. Mix until well blended.
6. Pour Filling: Pour the eggnog mixture over the pre-baked crust, spreading it evenly.
7. Bake Cheesecake: Return to the oven and bake for 30-35 minutes or until the center is set and slightly jiggly.
8. Cool Bars: Remove from the oven and let cool at room temperature for about 15-20 minutes. Transfer to the refrigerator to cool completely for at least 2 hours.
9. Cut into Bars: Once chilled, cut into squares and serve as desired.
10. Garnish: Optionally, top with whipped cream and a sprinkle of nutmeg or cinnamon before serving.

These steps will guide you in creating these incredible Eggnog Cheesecake Bars effortlessly.