Add the rolled oats to a blender. Pulse until they form a fine flour.

Add protein powder, mashed banana, eggs, milk, baking powder, vanilla, and a pinch of salt. Blend until smooth and slightly thick.

Preheat your waffle maker and lightly grease if needed.

Pour batter into the waffle iron according to the manufacturer's guide. Cook until the waffles are golden brown and crisp.

Remove carefully and serve with your favorite toppings.