Beat the Cream Cheese and Sugars: In a stand mixer or large bowl, beat the cream cheese and sugars at medium-high speed for 5 minutes until combined and fluffy. Scrape down the sides and bottom of the bowl as needed.
Add Wet Ingredients: Add the pumpkin puree, sour cream, vanilla extract, and freshly squeezed lemon juice. Mix until well combined.
Incorporate the Eggs: Lower the mixer speed and beat in the eggs one at a time, mixing for about 5 seconds per egg until just incorporated.
Add Dry Ingredients: With the mixer on low, add the flour, salt, cinnamon, ginger, and nutmeg. Mix until combined.
Prepare the Water Bath: Fill a large rectangular glass Pyrex baking dish ¾ full with room temperature water and place it on a rack directly below the middle oven rack.
Preheat the Oven Again: Preheat the oven to 350˚F with the 'water bath' inside.
Pour and Bake the Cheesecake: Spread the cheesecake batter evenly over the cooled crust. Place the cheesecake on the middle rack above the water bath and bake for 55-60 minutes, or until the center is almost set and slightly wobbles when gently shaken.Pro Tip: Don’t open the oven while cooking! Opening the oven door drastically reduces the temperature, which can slow the baking process and can cause your cheesecake to crack and sink. To prevent cracks do not open the oven during baking to check on the cheesecake. Only open at the end when opening slightly with a wooden spoon at the 55-60 minute mark. Cool in the Oven: Turn off the oven and crack the door open slightly (use a wooden spoon to keep it ajar). Let the cheesecake rest in the oven for 1 hour and 30 minutes as it cools.
Cool Completely: Remove the cheesecake from the oven and let it cool completely on a wire rack. Transfer to the refrigerator and chill for at least 6 hours or overnight.