For the Waffles
Add all of the waffle ingredients to a blender and blend until smooth. Scrape down the sides and blend once more to ensure that all ingredients are incorporated. Heat a waffle iron and coat with cooking spray. Cook the waffles until golden brown and serve with cinnamon sauce and/or maple syrup, if desired.
For the Sauce
Add the corn syrup, brown sugar, water, cinnamon and salt to a saucepan. Stir and cook over medium-high heat, stirring often until it reaches a boil. Let the syrup boil for 2-3 minutes. Remove from the heat and stir in the butter. Let cool for 10 minutes to thicken a bit before serving.