Heat a large skillet or griddle to medium heat and spray well with nonstick cooking spray.
In a large mixing bowl, whisk together the flour, sugar, baking powder, ground cinnamon, and salt until well combined. Set aside.
In a separate mixing bowl, whisk together the milk, eggs, oil, pure vanilla extract, and mashed banana until fully combined.
Add the dry ingredients to the wet ingredients and mix until just combined, making sure not to over mix the batter.
Using a ¼ cup measuring cup, scoop the batter from the bowl and drop onto the heated skillet or griddle. Once the top starts to bubble and the edges look set, carefully flip the pancakes, and allow to cook for another 1 to 2 minutes.
Serve warm with banana slices and pure maple syrup.