Combine eggs, mashed bananas, greek yogurt, ground flaxseed and baking powder in the bowl of a food processor or blender.
Blend until you get a homogeneous mixture. Let mixture sit for a few minutes. Pour batter into the waffle maker, making sure to cover almost 90% of the entire surface area.
Let batter cook until your waffle maker indicates that the waffles are done (or until no more steam is emitted from the waffle maker)
Serve with sliced bananas drizzled in honey or maple syrup.