Step 1
Position a rack in the middle of the oven and preheat to 350°F (180°C). Generously grease 24 mini muffin cups with nonstick cooking spray or grease with butter.
Step 2
In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt. In another bowl, stir together the buttermilk, egg, 2 tablespoons maple syrup, and the butter until just combined. Add the wet ingredients to the dry ingredients and stir until combined. Stir in the mashed banana.
Step 3
Spoon the batter into the prepared muffin cups. Bake until the muffins are puffed and golden, 10–12 minutes. Let the muffins cool slightly in the pan on a wire rack, then unmold onto the rack. Serve right away with maple syrup for dipping.
Step 4

This recipe is excerpted with permission from <a href="http://www.amazon.com/gp/product/1616282002/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1616282002&linkCode=as2&tag=craftfocom-20">"Home Baked Comfort (Williams-Sonoma): Featuring Mouthwatering Recipes and Tales of the Sweet Life with Favorites from Bakers Across the Country"</a> by Kim Laidlaw and published by Weldon Owen.