First Step: Preheat Oven and Prepare Crust. Set oven temperature to 350°F (175°C). If using a homemade crust, combine graham cracker crumbs, brown sugar, cinnamon, salt, and browned butter. Press the mixture evenly into the bottom and sides of a 9-inch springform pan lined with parchment paper or foil. Bake the crust for 10 minutes, then allow it to cool before adding filling. For gluten-free variants, use GF crumbs or almond flour crust.

Second Step: Beat Cream Cheese and Sugars. Place softened full-fat brick-style cream cheese in a large bowl. Beat on medium speed with both brown and granulated sugars until smooth and free of lumps. Scrape down bowl sides frequently to ensure even mixing.

Third Step: Add Sour Cream, Vanilla, and Pumpkin. Mix in full-fat sour cream and vanilla extract or vanilla bean paste. Stir until uniformly blended. Fold in pumpkin puree along with pumpkin pie spice or your preferred spice blend, combining thoroughly to develop flavor.

Fourth Step: Incorporate Eggs and Optional Cornstarch. Add eggs one at a time, mixing gently after each addition to avoid introducing excess air, which can cause cracks during baking. If desired, stir in cornstarch to firm up the filling and improve sliceability, especially for vegan or alternative versions.

Fifth Step: Bake with Care. Pour the creamy filling into the chilled crust. Place the cheesecake in a foil-lined baking sheet or set up a water bath by placing a roasting pan filled with boiling water on the lower oven rack and the cheesecake on the middle rack. Bake for 40 minutes (without water bath) up to 1 hour 10 minutes (with water bath), until edges are set and the center jiggles lightly when moved.

Sixth Step: Cool Slowly. Turn off the oven and slightly open the door. Let the cheesecake cool inside for 1 hour to prevent cracking. Then, remove from oven and bring to room temperature on the counter for 30 minutes before refrigerating.

Final Step: Chill and Garnish. Refrigerate cheesecake uncovered for 4 to 6 hours or overnight to set fully. Whip heavy cream with powdered sugar, vanilla, and cinnamon until stiff peaks form. Spread this cinnamon whipped cream evenly over the chilled cheesecake just before serving for a luscious finishing touch.