Preheat oven to 350. Coat loaf pan with cooking spray.
In a bowl mix together flour, baking soda and a pinch of salt.
In a second bowl whip the butter and sugars together until fluffy. Add orange zest. Drop in eggs one at a time mixing well after each addition.
Mix in bananas.
Add flour mixture and coconut, stirring to combine.
Pour batter into loaf pan and sprinkle with remaining 2 tbsp of coconut.
Bake for 50-55 minutes or until inserted toothpick comes out clean.