In a large bowl (preferably one with a pour spout) whisk together flour, brown sugar, baking powder, baking soda, salt, cinnamon, nutmeg, cloves, and ginger. Set aside.
In another bowl, whisk to combine melted butter, milk, eggs, vanilla, and pumpkin until smooth.
In the dry ingredients bowl, make a well in the center. Pour in the wet ingredients. With a wooden spoon or spatula stir to combine. Some lumps will remain. Do NOT overmix.
Heat a skillet with 1-2 teaspoons of oil over medium heat. Take a paper towel and wipe out the excess oil. Using a 1/4-cup, ladle out pancake batter. Cook 3-4 pancakes at once. Cook until bubbles rise and pop. Flip over and cook for another 2 minutes on the other side. Keep warm in preheated oven, or serve immediately with lots of butter and syrup.