Preheat your waffle iron according to manufacturer's instructions. If your waffle iron has a temperature setting, set it to medium-high or about 375 degrees Fahrenheit (190 degrees Celsius).
In a large bowl, whisk together the plant-based milk and apple cider vinegar. Let it sit for 2 minutes to slightly thicken.
Add the mashed banana, neutral oil, and vanilla extract to the bowl and whisk until well combined.
Add the flour, sugar, baking powder, and salt to the wet ingredients. Stir gently until just combined. Do not overmix. A few small lumps are fine.
Lightly grease the waffle iron if needed. Pour enough batter onto the center of the waffle iron to spread toward the edges when closed.
Cook for 3 to 5 minutes, or until golden and crisp.
Carefully remove the waffle and repeat with the remaining batter.
Serve warm with maple syrup, nut butter, fresh fruit, or extra sliced banana.
Notes
Use overripe bananas: For maximum sweetness and flavor.
Don’t overmix the batter: To avoid dense waffles. It’s actually best to leave a few small lumps in the batter, stirring only until the dry ingredients have mixed in.
Preheat waffle iron: To prevent sticking, ensure even cooking, and crisp edges.
Don’t overfill: Aim to cover ¾ of the surface area. It will spread when closed.