In a large bowl combine oats, protein powder, and cinnamon, mix together.

Add the wet ingredients: peanut butter, vanilla extract, and water. Stir/mash the mixture together until well incorporated.

Scoop out enough mix to make a one inch ball and roll it into a ball with your hands. If the mixture is too dry, add additional water one tablespoon at a time until the mixture can form a ball.

Continue scooping and rolling until all of the mix has been used, yielding 12 balls.