Preheat oven to 350℉, and lightly grease a 12-cup muffin tin with butter or non stick cooking spray
In a large mixing bowl, add the eggs, and beat slightly
Add the bananas, and mash well
Add the flour, sugar, baking powder, baking soda, cinnamon and salt, give the dry ingredients a quick stir
Add the milk, vanilla and melted butter, and stir the batter until just combined. Don't over mix -- a few lumps are fine
Stir in the chocolate chips
Scoop the batter into the muffin pan
Bake for 18-20 minutes or until toothpick inserted into center of the muffins comes out fairly clean. Should not be wet, but a few crumbs and/or chocolate is fine
Allow to cool slightly, then remove from the pan to finish cooing on a wire rack or platter