Blend Wet Ingredients: Place the banana, milk, vanilla extract, and eggs into the blender. Blend until you achieve a smooth mixture, ensuring there are no large banana chunks left.
Incorporate Dry Ingredients: Add the oats, baking powder, salt, and cinnamon to the blender. Blend again until the mixture is well combined and smooth, yet retaining a slight texture from the oats.
Preheat and Grease: Heat your griddle or skillet over medium heat and lightly grease it with butter or oil to prevent sticking.
Cook the Pancakes: Pour 1/4 cup of batter for each pancake onto the hot surface. Cook until you see bubbles forming on the surface and the edges look set, about 2 minutes. Flip carefully and cook for another 2 minutes or until golden brown.
Serve and Enjoy: Transfer the cooked pancakes to a plate and continue with the remaining batter. Serve hot with your favorite toppings like fresh fruits, nuts, or a drizzle of maple syrup.