Peel and mash the banana, stir in the egg. Mix in any non-chunky add ins that you want (e.g. nut flours or butters, baking powder...).
Heat a non stick skillet and lightly spray with oil. Turn the heat down to low.
Pour a circle of batter into the pan (I used about 1 tbsp of batter per pancake - it's easier if you make very small pancakes).
Cook until golden brown on the underside (around 1 minute) sprinkle on any chunky ingredients (e.g. chocolate chips, fruit, nuts, if using), then use a thin metal spatula to gently get underneath the pancakes and flip them over. Cook until golden brown on the other side (30 seconds to 1 minute).
Serve warm with whatever the heck you want