In a blender, blend the rolled oats until they reach a fine flour like consistency.
Add the rest of the dry ingredients to the blender, - baking powder, salt, and cinnamon. Empty dry ingredients into a bowl and set aside.
Add the ripe banana, spinach, milk, egg, milk, oil and blend until totally smooth. The spinach should be as blended in as possible so your little one doesn't find any chunks.
Add the dry mix to the blender and blend on high for 20 to 30 seconds until smooth.
Heat a pan or a griddle over medium heat. Pour batter onto the pan to make small pancakes and cook for about 3 minutes. Flip the pancakes and finish cooking for about 2 to 3 minutes.
Cool pancakes and serve!