Mix the Dry Ingredients
Whisk together the flour, baking powder, cinnamon, and salt in a medium bowl.
Combine the Wet Ingredients
Mash the banana in a separate large bowl and beat it with the egg until smooth.
Whisk in the milk until well combined.
Make the Batter
Gradually add the dry ingredients to the banana mixture. Stir gently until just combined—don’t overmix! The batter will be slightly lumpy, which is perfect for fluffy pancakes.
Cook the Pancakes
Heat a large nonstick skillet or griddle over medium heat and lightly spray it with nonstick cooking spray.
Scoop the batter using a ⅓-cup measuring cup and pour 3–4 circles of batter into the skillet.
Cook for 2–3 minutes until the pancakes are puffed and golden on the bottom. Flip and cook for another 1–2 minutes until cooked through.
Serve
Stack the pancakes and serve warm with banana slices and maple syrup.