Preheat the oven to 350F. Spray a non-stick 9x5 inch loaf pan with a cooking spray.
Put butter and brown sugar in a large bowl and mix until combined. Add the eggs and pumpkin and mix until combined. Add flour, cinnamon, ginger, baking soda, baking powder and salt and mix until combined.
Transfer the batter to the loaf pan.
Put pumpkin bread in the oven and bake for 55 minutes.