Preheat the oven to 350 degrees F (175 degrees C).
Mix brown sugar, eggs, melted butter, oil, water, and vanilla extract together in a small bowl.
Combine flour, baking powder, baking soda, cinnamon, nutmeg, allspice, cloves, and ginger in a separate bowl. Pour in butter mixture; blend until smooth. Slowly mix in pumpkin puree. Divide batter between 2 loaf pans.
Bake in the preheated oven until a toothpick inserted into the middle comes out clean, 35 to 55 minutes.
