In a large mixing bowl, whisk together the flour, brown sugar, baking powder, baking soda, cinnamon, nutmeg, ginger, and salt until well combined.
Add the pumpkin puree, eggs, milk, and melted butter to the dry ingredients. Whisk until just combined and the batter is smooth, but do not overmix.
Preheat a griddle or non-stick skillet over medium heat until hot. Lightly grease if necessary.
Pour ¼ cup portions of batter onto the hot griddle, spacing them apart. Cook until bubbles form on the surface and the edges look set, about 2-3 minutes.
Flip the pancakes carefully with a spatula and cook for another 2 minutes until golden brown and cooked through.
Transfer the cooked pancakes to a plate and keep warm. Repeat with the remaining batter, adjusting heat as necessary.
Serve the pumpkin spice pancakes warm with your favorite toppings, such as maple syrup, whipped cream, or toasted pecans.