Whisk flour, baking powder, baking soda, salt, pumpkin pie spice, and brown sugar in a large bowl.
Whisk milk, pumpkin puree, eggs, and vanilla in a second bowl. Stream in melted butter while whisking.
Fold wet ingredients into dry until just combined; a few small lumps are fine. Let batter rest 5 minutes.
Heat a nonstick skillet or griddle over medium. Lightly grease with butter or oil.
Scoop about 1/4 cup batter per pancake. Cook until bubbles form and edges look set, 2–3 minutes.
Flip and cook until golden and cooked through, 1–2 minutes more. Adjust heat as needed.
Serve warm pancakes with maple syrup. Keep finished pancakes in a 200°F oven while cooking the rest.
Notes
For extra texture, fold in a small handful of chopped pecans or chocolate chips. Leftovers reheat well in a toaster; freeze in a single layer, then store in a zip-top bag for up to 2 months.This recipe is an original creation inspired by classic Pumpkin Spice Pancakes with Maple Syrup flavors. All ingredient ratios and instructions are independently developed.