Preheat oven to 350°F and line a muffin tin with cupcake liners.
Place the softened butter, dark brown sugar, and oil in the bowl of a stand mixer fitted with the paddle attachment.
Cream the butter, oil, and dark brown sugar together on a medium speed (speed 4 for a kitchen aid mixer) for 5 minutes, until the butter and sugars are light and fluffy.
Add the eggs one at a time, mixing at a medium low speed until combined, and scraping down the sides of the bowl after each addition.
Add vanilla extract and mix until combined.
In a medium sized bowl, add the flour, baking powder, salt, cinnamon, and apple pie spice together. Whisk together until all the ingredients are evenly distributed.
Next, by hand with a rubber spatula, fold in half of the dry mixture into the batter and fold in together until its almost combined.
Add half of the sour cream and continue to gently fold until combined.
Add the last half of the dry ingredients mixture and continue to gently fold until combined. Then add the last half of the sour cream and gently fold until combined.
Using a muffin scoop, scoop the batter into the cupcake liners so they’re about ¾ of the way full.
Place the cupcakes in the oven and bake for about 15-20 minutes. You can also check doneness of the cupcakes by inserting a toothpick into the center of the cupcake and if the toothpick comes out clean your cupcakes are done :)
Let cupcakes cool at room temperature before filling and frosting!