Line 18 large muffin cups with paper liners. Sift the flour, sugar, baking powder, baking soda, and salt into the bowl of an electric mixer fitted with a paddle attachment. Add the melted butter and blend. Combine the eggs, milk, vanilla, and mashed bananas, and add them to the flour-and-butter mixture. Scrape the bowl and blend well. Don't overmix.
Fold the diced bananas, walnuts, granola, and coconut into the batter. Spoon the batter into the paper liners, filling each 1 to the top. Top each muffin with dried banana chips, granola, or coconut, if desired. Bake for 25 to 30 minutes, or until the tops are brown and a toothpick comes out clean. Cool slightly, remove from the pan, and serve.
Ina Garten, 1999, The Barefoot Contessa Cookbook, All Rights Reserved