In a blender, grind oats, baking powder, and cinnamon until a flour forms.
Add in remaining ingredients (except for cooking spray) and blend until smooth.
Place a nonstick pan over medium heat and coat with cooking spray. Once pan is hot, pour in about ¼ cup of batter. Cook pancakes one at a time for a few minutes on each side.
Serve with additional berries and a drizzle of nut butter, if desired.