In a large bowl, combine oat flour, baking powder, salt, nutmeg and cinnamon. Whisk together to combine.
In separate medium bowl, whisk the eggs. Add eggnog, olive oil, banana, maple syrup and vanilla extract. Whisk until completely combined. Pour into flour mixture. Stir with spatula or spoon until just combined. Let the batter sit for 10 minutes for oat flour to soak up moisture.
Plug in and preheat your waffle iron. Gently stir the batter one more time to combine. Pour desired amount of batter (mine iron is ½-cup) into center of heated waffle iron. Cook each waffle according to waffle iron directions (usually 3-5 minutes), until crisp and golden brown. Serve right away or place waffles in oven at 200º F. to keep warm and crisp until serving. Spread with butter if desired and pour additional eggnog over as a syrup.
Make sure to preheat you waffles iron before pouring the batter into it
Let the batter rest for 10 minutes before using this helps the oat flour soak up the mixture making them soft and fluffy
If you're making a large batch keep the cooked ones in a pre-heated oven to stay warm and crisp while you make the rest
Homemade eggnog will make these waffles extra special but store bought will also work great
These waffles can be frozen. To cook from frozen heat them in a hot oven for a couple of minutes until hot and crispy