01 - Preheat oven to 325°F. Lightly grease a 9-inch springform pan and line the base with parchment paper.
02 - Combine almond flour, powdered sweetener, melted butter, ground cinnamon, and pinch of salt in a mixing bowl. Press evenly into bottom of pan to form crust.
03 - Bake crust for 10 minutes, then remove and allow to cool slightly.
04 - In a large bowl, beat softened cream cheese and powdered sweetener until smooth and fluffy using a mixer.
05 - Add pumpkin puree, eggs, heavy cream, vanilla extract, pumpkin pie spice, ground cinnamon, and salt. Mix until just combined and smooth; avoid overmixing.
06 - Pour pumpkin filling over baked crust and smooth the surface.
07 - Bake for 40 minutes until center is just set with slight wobble. Turn off oven, crack door, and allow cheesecake to cool inside for 1 hour.
08 - Transfer cooled cheesecake to refrigerator and chill for at least 2 hours until fully set.
09 - Top with whipped cream and a dash of cinnamon before serving, if desired.