Increase the temperature on the oven to 375 degrees Fahrenheit.
In the bowl of a stand mixer or in a large bowl with a hand mixer, blend the cream cheese until smooth. Beat in the sugar and flour. Scrape down the sides and bottom of the bowl.
24 ounces cream cheese, 2 tablespoons all-purpose flour
Beat in the eggs one at a time on medium-low, then beat in the eggnog until smooth. Then beat in the rum, vanilla, cinnamon, and nutmeg.
3 eggs, 1/2 cup eggnog, 1 teaspoon rum, 1 1/2 teaspoons cinnamon, 1 teaspoon vanilla extract, 1/2 teaspoon nutmeg
Pour the mixture into the crust and bake for 30 minutes. Turn the oven off and with the door closed, leave the cheesecake in there for 1 hour. Remove the cheesecake and allow it to cool on the counter for an hour. Transfer it to the refrigerator and refrigerate for 8 hours or overnight.