Preheat your waffle maker.
In a large mixing bowl, combine all the ingredients except for the flour. Whisk together until well incorporated.
Add the flour to the batter a little at a time, and blend well.
Using cooking spray (we used avocado oil cooking spray), lightly spray the top and bottom plates of the waffle iron. Pour in about ½ cup of batter for one waffle, close the lid, and cook for 2-3 minutes or until the steam almost stops.
Place the waffles into a warm 150-degree oven while you continue to make the waffles.
Serve with a dollop of plain Greek yogurt and pure maple syrup. If desired, sprinkle with a touch of the pumpkin pie spice.
*If making ahead of time and freezing. Reheat the waffles by preheating the oven to 350 degrees and placing the waffles on a baking sheet. Heat waffles for approximately 10 minutes or until warmed and slightly crisped.