Mash the bananas: In a large bowl, mash the ripe bananas with a fork until smooth. For texture, a few little lumps are OK.
Mix wet ingredients: Add the egg, milk, melted butter, and vanilla essence to the mashed bananas. Mix thoroughly with a whisk.
Combine dry ingredients: In a separate bowl, mix the flour, baking powder, baking soda, salt, and sugar (if using).
Make the batter: Add the dry ingredients to the wet mixture a little at a time, stirring just until mixed. To maintain the pancakes' fluff, do not overmix.
Heat the pan: Heat a griddle or nonstick skillet to a medium temperature. Apply a little oil or butter.
Cook the pancakes: Pour 1/4 cup of batter onto the skillet for each pancake. Cook for two to three minutes, or until bubbles appear on the top, then turn and continue cooking for one to two more minutes, or until golden brown.
Serve warm: Stack the pancakes and serve with your favorite toppings (see suggestions below).