Pour the two cups of rolled oats into a blender, and blend until it becomes the consistency of flour. (If there's still some larger oats it's okay.)
Once the oats are blended, pour into a mixing bowl and mix together with the baking soda, baking powder, salt, and sugar.
In a separate bowl, mix together milk and vinegar.
Add the egg, oil, and one mashed banana. Mix it all together.
Add the wet and dry ingredients in the blender and blend until well mixed.
Turn your stove top to medium-low heat and heat pan for five minutes.
Add a quarter sized puddle of oil to the pan and swirl it around.
Spoon your pancake batter into the pan and let sit until the stop starts to bubble, about two minutes.
Flip and cook on the other side for an additional two minutes.
Top with butter and whatever else you like on your pancakes and eat!