Preheat your oven to 350°F. This ensures the pie bakes evenly, creating a perfect texture as it cooks.

In a large mixing bowl, combine the softened cream cheese with the brown sugar. Use an electric mixer to beat them until smooth and well blended.

Mix in the cinnamon, vanilla extract, nutmeg, and salt until everything is thoroughly combined and fragrant.

Add the eggs one at a time, ensuring each is fully mixed in before adding the next, to create a smooth filling.

Pour in the heavy whipping cream and flour, mixing gently until the batter is just combined. Avoid overmixing.

Pour the pie filling into the unbaked pie crust, smoothing it out evenly.

Bake for 45-50 minutes, until the edges are puffed and the center is slightly jiggly.

Let the pie cool on a rack to room temperature, then cover and chill for 3-4 hours to set before slicing.