1-Preheat your oven to 350°F (175°C) and: Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners or lightly grease it.
2-In a large bowl, whisk together the: In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
3-In another bowl, mix the mashed bananas,: In another bowl, mix the mashed bananas, melted butter, egg, and vanilla extract until well combined.
4-Add the wet ingredients to the dry: Add the wet ingredients to the dry ingredients, stirring until just combined. Be careful not to overmix.
5-Fold in the chopped cherries (and nuts: Fold in the chopped cherries (and nuts if using), distributing evenly throughout the batter.
6-Divide the batter evenly among the muffin: Divide the batter evenly among the muffin cups, filling each about ¾ full.
7-Bake for 20-25 minutes, or until a: Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
8-Let the muffins cool in the pan: Let the muffins cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.