In a medium bowl, sift the flour, baking powder, baking soda, salt, cinnamon, pumpkin pie spice, ginger, and nutmeg. Set aside.
2 cups All-purpose flour, 1 tsp Baking powder, 1/2 tsp Baking soda, 1/2 tsp Salt, 2 tsp Ground cinnamon, 1 tsp Pumpkin pie spice, 1/2 tsp Ground ginger, 1/4 tsp Ground nutmeg
Pour the can of pumpkin on a plate and spread it evenly. Use 2 paper towels to soak up the moisture from the pumpkin. I do this three times, (so 6 paper towels). Soak up as much moisture as you can.
15 oz Pumpkin Puree
In a large bowl, add the oil, brown sugar, vanilla, sour cream, egg, and pumpkin puree. Use a whisk to mix until combined.
1/2 cup Oil, 3/4 cup Brown sugar, 1 tsp Pure vanilla extract, 1/2 cup Sour cream, 1 Large egg
Add the dry ingredients and use a baking rubber spatula to mix until combined. It will be a thicker cake batter.
Pour the cake batter into the pan. Spread into an even layer.
Lightly dollop the cream cheese batter on top of the cake batter. Spread evenly using an offset icing spatula.
Take the crumble out of the fridge, use your fingers to break up the big clumps and sprinkle evenly on top of the cream cheese layer.
Bake for 45-53 minutes. Bake until a toothpick inserted comes out clean from the pumpkin cake. There may be moist crumbs from the cheesecake part, and that is fine.
Let the cake sit in the hot pan for 20 minutes before transferring to a cooling rack. Cool completely.