In one large bowl, mix together all of the filling ingredients: the softened cream cheese, entire 15 oz. can of pumpkin, eggs, sour cream or heavy cream, vanilla extract, cornstarch, brown sugar, granulated white sugar, flour, ground nutmeg, Allspice, ground ginger, cinnamon, and pumpkin pie spice.
16 oz. cream cheese, softened, 1, 15 oz. can 100% pumpkin puree (not pumpkin pie filling), 2 large eggs, room temperature, 1/2 cup sour cream (or heavy cream), room temperature, 1/2 cup brown sugar, 1/4 cup granulated sugar, 1/4 cup flour, 2 Tbsp. corn starch, 2 tsp. vanilla extract, 1 1/2 tsp. cinnamon, 1/2 tsp. nutmeg, 1/2 tsp. Allspice, 1/2 tsp. Ground Ginger, 2 Tbsp. pumpkin pie spice