Preheat oven to 325°F (165°C). Spray loaf pan with non-stick cooking spray and set aside.
In a medium bowl, combine flour, powdered milk, baking soda, baking powder, ground spices, and salt. Set aside.
In a small, microwave-safe bowl, heat coconut oil in microwave for 30 seconds to melt. Set aside.
In a mixing bowl, beat eggs until the are lemon colored. Add pumpkin, brown sugar, molasses, warm water and vanilla. Mix on low to combine. Add coconut oil and mix thoroughly.
Stir in dry ingredients until well combine. (You can also mix this by hand.)
Pour batter into prepared loaf pan. Tap pan on counter a few times to get out the air bubbles, and then bake in preheated oven for 1 hour and 15 minutes. Loaf is done when a toothpick inserted in the center comes out clean.
Allow loaf to cool in the pan on a wire rack until he pan is cool enough to touch; at least 10 minutes. Turn out onto a wire rack to cool completely.
Dust loaf with powdered sugar if desired.
Notes
Add the ingredients in Order. You are basically making a cake, and the order you do things matters. Add the dry ingredients to the wet - not the other way around. Believe it or not, this matters. Adding the wet ingredients to the dry can result in pockets of flour and clumpy, inconsistent mixing. Mix in the dry ingredients by hand.Don't overmix the batter. Over-mixing can result in extra gluten development, which can make your quick bread gummy and unpleasantly chewy.