Combine the dry ingredients and add melted butter mixing in a stand mixer or hand held. In a separate bowl combine eggs, milk and vanilla and mashed bananas. Fold in granola, nuts, coconut and diced bananas.
Baking them initially at a higher temperature and then turning down the temperature for the rest of the time, causes them to be a tall and beautiful bakery store worthy muffin.
All muffins freeze well, and in fact you should freeze all you don’t eat on the first or second day as even these muffins will dry out after a couple of days.