Preheat your oven to 350°F.
Whisk together the flour, baking soda, baking powder, salt and pumpkin pie spice in a separate bowl. Set aside.
2 cups all-purpose flour, 2 teaspoons baking powder, 1 teaspoon baking soda, 1 teaspoon sea salt, 1 tablespoon pumpkin pie spice
In the bowl of a stand mixer or large mixing bowl, mix together the brown sugar, granulated sugar, pumpkin puree and vegetable oil until combined and smooth.
1 cup light brown sugar, ½ cup granulated sugar, 1 cup vegetable oil, 15 ounces pumpkin puree
Add the vanilla extract and eggs and mix together until well combined.
1 teaspoon vanilla extract, 4 large eggs
Add the dry ingredients to the pumpkin mixture and mix just until combined.
Spray the mini bundt pan with nonstick cooking spray and fill each mold to about 1⁄4” from the top.
Bake for 15-20 minutes or until golden brown and set. Set aside and let the cakes cool in the pan for 10 minutes before carefully removing from the mold. Le the cakes cool completely before decorating.