Preheat the oven to 375°F. Lightly grease a baking loaf pan and lightly dust, shaking out any excess. Set aside.
In a medium bow, whisk the all purpose flour, pumpkin pie spice, cinnamon, baking soda and salt.
In a large bowl, mix the pumpkin puree, granulated sugar and brown sugar.
Beat in the eggs. Stir in the vegetable oil and vanilla extract. Add the dry ingredients to the wet ingredients, and stir together until batter is smooth.
Pour the batter into the loaf pan. Smooth the top with a spatula. Bake for 60 minutes, covering the top after 30 minutes with foil. Loaf is cooked until a toothpick comes out clean when poked with a fork. Let cool, then slice and serve.