Preheat oven to 350 degrees.
Mix all dry ingredients in a bowl.
In a separate bowl, combine all wet ingredients—eggs, oil, water, pumpkin & vanilla and mix until combined.
Coat your loaf pan with butter, then add a spoonful of flour and shake it all around to coat. This will prevent sticking. You could also use cooking spray.
Bake for 50 minutes. Then lower the heat to 325 degrees and cook for another 20-35 minutes, until a toothpick comes out clean. If the top is getting too brown, lightly tent it with a piece of foil.
Remove from oven and cool for 5-10 minutes in the pan. Remove from pan and let it cool on a rack for several hours until it's completely cooled.
Store in an air-tight container or freeze and eat within 3 months.