Preheat oven to 350 degrees F. Grease a bundt pan with non-stick cooking spray and a sprinkle of flour.

In a large mixing bowl, combine the sugars, eggs, pumpkin puree, oil, and vanilla.

In a separate bowl, combine the flour, baking soda, baking powder, spices, and salt.

Add the dry ingredients to the pumpkin mixture and stir to combine.

Pour the batter into the prepared bundt pan.

Bake 48 to 55 minutes, or until a toothpick inserted in the center comes out clean. Allow to cool completely before frosting.

Beat the butter and cream cheese together until light and fluffy, 2 to 3 minutes. Add the powdered sugar and mix well for 2 to 3 minutes. Add a little more powdered sugar if needed, to thicken the frosting to a piping consistency. Mix in the vanilla and cinnamon. Add a little more cinnamon, if desired.