Boil the eggs.
Mix all of the dry ingredients in a bowl.
Pour in the milk and whisk until smooth, add the whipping cream and whisk some more.
Mix the eggs with the batter, one at a time and whisk. (if you want to omit the eggs, now is the time to mash the bananas and mix them with the batter.)
Lastly, mix in the oil, chopped spinach and grated cheese.
Heat the waffle iron and brush it with a little oil, so the waffles don't stick to the iron.
Pour about 100 ml of batter for each waffle into the waffle iron.
Bake the waffles for about 5-7 min. (Mine has a green lamp that will turn on when they are ready.)
Fry the brussels sprouts while baking the waffles.