Combine flour, sugar, baking powder, salt and cinnamon in a bowl. Whisk to combine and set aside.
In a medium bowl combine egg, milk, butter, vanilla and bananas, and whisk to combine.
Add dry ingredients to wet ingredients, whisk until just combined and all of the flour is incorporated. (Batter will be lumpy, it's ok, do not overmix)
Heat a large sauté pan over medium/medium-high heat.
Ladle 1/3 cup // 85ml batter into the pan. Let pancakes cook for 2 to 3 minutes until you see large bubbles on top and the surface looks slightly dry.
Flip pancakes over with a spatula and cook for another 2 - 3 minutes.
Serve with warm maple syrup and extra sliced bananas, if desired.