Preheat waffle maker and grease with cooking spray.

Combine all of the ingredients, except for the sour cream, in a large mixing bowl.

Add around a heaped tablespoon of mixture to each waffle iron.

Cook until brown on top.

Remove from waffle maker and top with some cheese.

Repeat with the remaining batter.

Serve the potato waffles with sour cream and fresh chives.

Mr Foodie added some crispy onions as well for extra onion-ness