In a large food processor, combine oats, baking powder, salt, milk, and banana. Stop to scrape the sides as needed.
Add eggs, honey(or agave), cinnamon and vanilla to food processor and blend to combine. (Add more milk if too thick to scoop). Pour batter into a medium bowl for scooping.
Heat skillet over medium, add butter or oil. Scoop 1/4 cup spoonfuls into pan, flipping when the batter starts to bubble. Try reducing the heat if cooking too quickly. When the pancake is cooked through, transfer to a plate and finish doing the same with rest of the batter.
Notes
Serve warm or cool completely and freeze for up to 3 months. Reheat on a warm skillet.