In a bowl whisk together the flour, baking powder, brown sugar, baking soda, salt and nutmeg.
In another bowl mash together the bananas. Whisk in eggs, milk, cooled butter, and vanilla.
Pour wet mixture into dry mixture and stir until just incorporated - do not overmix batter. Let it sit for 5 minutes.
Set a griddle or nonstick pan over medium heat until hot.
Place a tablespoon of butter onto the pan and allow it to melt before pouring 1/4 cup of batter onto pan (batter is thick). Repeat with batter so you have 2-3 pancakes on pan.
Cook until a few bubbles form on top of each pancake and the underside is golden brown, about 2 minutes. Flip the pancakes and cook for an additional 1-2 minutes until golden and cooked through.
Serve pancakes with syrup and butter.