Mash the bananas: In a large bowl, mash the ripe bananas with a fork until mostly smooth.
A few small lumps are fine.
Whisk the wet ingredients: Add the egg, milk, vanilla, and melted butter to the bananas. Whisk until combined.
Mix the dry ingredients: In a separate bowl, stir together flour, sugar, baking powder, baking soda, cinnamon, and salt.
Combine gently: Add the dry ingredients to the wet mixture. Stir until just combined. Do not overmix. A few streaks of flour are okay and will hydrate as the batter rests.
Rest the batter: Let the batter sit for 5 minutes.
This helps the baking powder activate and makes fluffier pancakes.
Preheat the pan: Heat a nonstick skillet or griddle over medium heat. Lightly grease with butter or oil. The surface is ready when a drop of water sizzles.
Portion and cook: Scoop 1/4 cup of batter per pancake.
If using add-ins like chocolate chips or blueberries, sprinkle them on now. Cook until bubbles form on top and the edges look set, about 2–3 minutes.
Flip and finish: Flip gently and cook another 1–2 minutes, until golden and cooked through. Adjust heat as needed to prevent burning.
Serve warm: Stack on plates and add your favorite toppings—maple syrup and extra banana slices are classic.