Preheat the oven to 350°F. Spray three 8-inch cake pans with baking nonstick spray. Line the bottom of the pans with 8-inch parchment paper circles and spray again.
In a medium bowl, sift the flour, baking powder, baking soda, cinnamon, ginger, pumpkin pie spice, and nutmeg. Add the salt. Set aside.
3 1/2 cups All-purpose flour, 1 1/2 tsp Baking powder, 1/2 tsp Baking soda, 1 tsp Salt, 2 tsp Ground cinnamon, 1 1/2 tsp Ground ginger, 1 tsp Pumpkin pie spice, 1/4 tsp Ground nutmeg
In a large bowl, add the oil, brown sugar, sugar, vanilla, eggs, sour cream, and buttermilk. Mix with a whisk.
1 cup Oil, 1 1/4 cup Brown sugar, 1/4 cup White granulated sugar, 1 tsp Pure vanilla extract, 4 Large eggs, 1/2 cup Sour cream, 1 cup Buttermilk
Add in the dry ingredients and mix until combined and the flour lumps are mixed in.
Pour the cake batter evenly through the three cake pans. Bake for 20-24 minutes until a toothpick inserted comes out clean.
Let the cakes sit in the hot pans for 10 minutes before transferring to a cooling rack. Cool completely.