Preheat oven to 350F and line a loaf pan with parchment paper. Ensure the parchment paper hangs over the side a bit so that you can grab onto it later to pull the loaf out of the pan.
In a large bowl, mix sugar, brown sugar, pumpkin puree, eggs, apple sauce, milk and vanilla extract.
To the wet ingredients, stir in the salt, pumpkin spice, cinnamon, baking soda and baking powder. Then add the flour and mix until it is all incorporated.
Next, add the chocolate chips and fold into the batter. Pour the batter into the loaf pan and sprinkle with additional chocolate chips.
Bake for 1 hour or until a toothpick inserted in the center comes out clean. Let cool for 5 minutes in the pan, then take hold of the overhanging parchment paper and carefully lift the pumpkin bread out of the pan and set onto a cooling rack. Let cool completely before slicing.