Mix Dry Ingredients: In a large bowl, whisk together flour, brown sugar, baking powder, baking soda, salt, and spices.
Mix Wet Ingredients: In a separate bowl, combine pumpkin puree, buttermilk, eggs, oil, and vanilla extract.
Combine: Pour wet ingredients into dry ingredients and gently stir until just combined. Do not overmix; a few lumps are okay.
Preheat Skillet: Heat a non-stick skillet or griddle over medium heat and lightly grease with butter or oil.
Cook Pancakes: Pour 1/4 cup batter per pancake onto skillet. Cook until bubbles form on the surface and edges are set, about 2–3 minutes. Flip and cook another 2 minutes until golden brown.
Serve: Keep pancakes warm in a low oven while cooking the rest. Serve with maple syrup, butter, or whipped cream.