How to Make It
Preheat a mini waffle iron. Spray waffle iron with cooking spray. Whisk together egg, mozzarella, flour, and if using, vanilla and cinnamon, until well combined.
Add half of the batter to waffle iron; cook until most of the moisture has evaporated and waffle is golden brown and toasted, about 3 minutes. Repeat with remaining batter. Serve immediately.