Remove the peel from the banana and mash it in a bowl with a fork. Add the flour and eggs. Then stir everything together until an almost homogeneous mass is formed.
Now preheat the waffle iron and, if necessary, brush it with a little oil. Put the slightly viscous batter into the waffle iron and spread the batter a little with a spoon. (Depending on the size of the eggs and the banana, about 2 - 4 waffles come out.) Now let the dough bake for about 2 to 3 minutes and check in between to see whether the waffles are ready. If they can be taken out without any problems, without sticking, they are done. Remove the golden brown waffle from the waffle iron and enjoy.
At will, e.g., 1 - 2 tablespoons of blueberries can also be added to the batter.