Add the blended oats back to the blender along with the baking powder, vanilla and cinnamon. Blend until smooth, with no lumps remaining. Allow mixture to sit for 5 minutes or so to thicken a bit.
Heat a large pan, skillet or griddle over medium heat and grease with cooking spray or coconut oil. Once heated, add a ladle or a couple of spoonfuls of the pancake batter.