Preheat your oven to 350F and thoroughly grease a 9×5 inch loaf pan.
In a large mixing bowl, whisk together the all-purpose flour, pumpkin pie spice, baking soda, and salt. Set the dry mixture aside.
In a separate medium bowl, vigorously whisk the canned pumpkin puree, vegetable oil, granulated sugar, and eggs until completely emulsified and smooth.
Pour the wet ingredients directly into the dry ingredients bowl. Gently stir with a spatula until just combined and no dry flour streaks remain.
Transfer the thick batter to the prepared pan, smoothing the top evenly.
Bake for 50-60 minutes. The bread is done when a toothpick inserted in the center pulls out with just a few moist crumbs and the top springs back to a light touch.
Let the bread cool completely in the pan before slicing and serving.