Preheat your oven to 350°F (175°C). Grease a loaf pan with oil or nonstick baking spray and sprinkle 1 tablespoon of sugar on the bottom.

In a large bowl, whisk together the pumpkin puree, eggs, oil, and bourbon or vanilla extract until smooth.

Add the granulated sugar and dark brown sugar to the wet ingredients, mixing until fully combined.

In a separate bowl, sift together the flour, baking soda, baking powder, salt, and pumpkin pie spice blend.

Gradually fold the dry ingredients into the wet ingredients until just combined. Do not overmix.

Pour the batter into the prepared loaf pan and smooth the top. Sprinkle the remaining 2 tablespoons of sugar evenly over the batter.

Bake for 55-60 minutes, or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes before transferring to a wire rack to cool completely.