Mash the bananas. In a large bowl, mash the bananas until mostly smooth with a few small lumps for texture.
Whisk in wet ingredients. Add milk, egg (or flax egg), vanilla, and maple syrup or honey if using. Whisk until combined.
Add the dry ingredients. Sprinkle flour, baking powder, baking soda, cinnamon, and salt over the wet mixture.
Stir gently until just combined. Avoid overmixing—some small streaks of flour are fine.
Rest the batter. Let it sit for 5 minutes to thicken. If it seems too thick, add a splash of milk; if too thin, sprinkle in a bit more flour.
Heat the pan. Warm a nonstick skillet or griddle over medium heat.
Lightly coat with oil or butter.
Cook the pancakes. Pour 1/4 cup batter per pancake. Cook 2–3 minutes, until bubbles form on top and edges look set. Flip and cook 1–2 minutes more, until golden and cooked through.
Serve warm. Top with sliced bananas, a drizzle of maple syrup, a dollop of yogurt, or a sprinkle of nuts.