In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
In another bowl, combine the milk, egg, and melted butter. Stir in mashed banana and vanilla extract.
Add the wet ingredients to the dry ingredients, stirring until just combined. Fold in the blueberries.
Heat a non-stick skillet over medium heat and coat with butter. Pour 1/4 cup of batter for each pancake. Cook until bubbles form on top, then flip and cook until golden brown.
Notes
Serve hot with your favorite syrup and a dollop of whipped cream for an extra treat.