Preheat oven to 350 degrees. Spray a loaf pan with non-stick spray.

Add the flour, brown sugar, sugar, pumpkin pie spice, baking soda, salt, and baking powder to a large mixing bowl and whisk to combine.

To a smaller bowl, add the pumpkin, oil, and eggs, Whisk well to combine.

Pour the pumpkin mixture into the dry ingredients and stir until just combined.

Spread the batter into the prepared loaf pan and bake for 60-70 minutes or until a tester comes out clean.

Cool for 10 minutes in the pan before removing to a wire rack set over a sheet pan.

Brush the top and sides of the bread with melted butter.

Combine the sugar and cinnamon in a small bowl.

Sprinkle liberally over the top and sides of the bread to coat, letting excess cinnamon sugar fall to the pan below.

Let cool for 1 hour before slicing and serving.