Preheat and grease your waffle maker. Set it aside.
In a bowl, mash the banana until smooth. Add in almond milk and apple cider vinegar. Mix well. Next, add in cornstarch, oat flour, and baking powder. Mix until everything is well incorporated.
Pour batter into the waffle maker. I am using ¾ cup of batter per waffle, but the amount may vary for a different waffle iron.
Transfer cooked waffles onto a cooling tray immediately. Serve and enjoy !
Notes
Leftover waffles can be frozen for up to 3 months. To do so, let them cool down completely, then transfer them into zip-top bags or seal containers, placing a layer of wax paper in between every waffle to prevent them from sticking together.
You can reheat frozen waffles either in the oven at 300 F for 10-12 minutes, or in a toaster.