In a large mixing bowl, combine the mashed bananas, milk, vanilla extract, and egg if using.
In a separate bowl, whisk together the flour, baking powder, baking soda, and salt.
Pour the wet ingredients into the dry ingredients and stir gently until just combined. Avoid overmixing to keep the texture light and fluffy.
Preheat a non-stick skillet or griddle over medium heat.
Lightly grease the skillet if needed.
Spoon small portions of batter onto the skillet to create mini pancakes.
Cook the fluffy banana pancake bites until bubbles appear on the surface and the edges begin to set.
Flip carefully and cook the other side until golden brown.
Serve warm with maple syrup, fresh fruit, yogurt, or nut butter.