Start by placing the old-fashioned oats, chopped bananas, eggs, vanilla extract, baking powder, cinnamon, and a pinch of salt into your blender. Blend the mixture on medium speed until you achieve a smooth batter. Give it a few shakes if necessary, ensuring no lumps are left. The consistency should be similar to pancake batter—thick but pourable.

Once the batter is ready, it’s time to prepare your waffle maker. Preheat it according to the manufacturer’s instructions. Once it's hot, lightly spray the grill plates with non-stick cooking spray to prevent sticking.

Carefully pour a few tablespoons of the batter onto the center of the waffle maker. Depending on the size of your waffles, adjust the amount as needed. Don't overfill; it'll spread as it cooks.

Close the waffle maker and allow it to cook until the waffle is golden brown. This typically takes about 4-5 minutes, but different waffle makers might vary. You’ll know they’re ready when you see steam dissipating from the machine.

Once done, gently remove the waffles with a spatula and serve them warm. Feel free to stack them on a plate and load them with all sorts of toppings—fresh fruit, a drizzle of honey, a dollop of yogurt, and a nut butter of your choice!