Preheat oven to 350° F. Prepare 2 loaf pans with nonstick cooking spray.
In a large mixing bowl, whisk together granulated sugar, light brown sugar, and vegetable oil.
Whisk in eggs and vanilla extract.
Add in pumpkin puree and milk and whisk to combine.
Add in all-purpose flour, pumpkin pie spice, baking soda, and salt, and whisk until well combined.
Portion the batter evenly between the 2 prepared loaf pans.
Bake for 40-45 minutes until the tops of the breads are baked through and an inserted toothpick comes out clean.
Allow the pumpkin bread to cool in the pans for 10-15 minutes. Remove from the pan and transfer to a wire rack to cool completely.