Preheat your waffle iron according to the manufacturer's instructions.
Add the ripe bananas, rolled oats, almond milk, eggs, baking powder, vanilla extract, cinnamon, and salt to a blender.
Blend until the mixture becomes smooth and creamy.
Lightly grease the waffle iron with cooking spray or a small amount of oil.
Pour the batter into the preheated waffle iron, being careful not to overfill.
Cook the Healthy Banana Oat Waffles for 4–5 minutes, or until golden brown and crispy.
Carefully remove the waffles from the iron.
Serve warm with your favorite toppings such as fresh fruit, maple syrup, nut butter, or yogurt.