Preheat oven to 350 degrees
Spray a 9X13 pan with baking spray and line with parchment for easy removal.
In mixer beat butter and sugar until it's well blended.
Add the eggs one at a time, combining at each addition.
Add milk, dry buttermilk and vanilla and mix to combine.
Add the bananas sliced in 1/2-1 inch chunks, then mix.
Add the four, baking soda and salt, mix to combine.
Mix chocolate chips with flour and sift off extra flour.
Add in 1/2 cup coconut.
Stir in chocolate chips then pour batter into prepared baking pan. Top with remaining 1/4 cup coconut
Bake for 35-40 minutes or until golden in color and set up so toothpick comes out clean.