In a large bowl, whisk together the dry ingredients. Flour, baking powder, salt, cinnamon and set aside.
In a medium bowl combine the mashed banana and milk together. Add the wet to the dry whisking until just combined, batter should be a little lumpy.
Heat your griddle or nonstick pan over medium heat. If needed spray with non-stick spray. Once up to temperature, do a tester cake.
Using a measuring cup or a small ladle and pour how ever many circles fit on your plan, leaving room to flip them. Cook until the pancake fluffs up and gets golden brown 2-3 minutes. Flip and cook on the other side until cooked through, 1-2 minutes. Makes about 10 pancakes.