Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan or line it with parchment paper for easy removal.
Prepare the Bananas: In a mixing bowl, mash the 3-4 overripe Maui bananas until smooth. Leave some small chunks for added texture if desired.
Mix Wet Ingredients: Add the melted unsalted butter to the mashed bananas and mix well. Then, stir in the eggs and pure vanilla extract until combined.
Combine Dry Ingredients: In a separate bowl, whisk together the all-purpose flour, granulated sugar, baking soda, and salt.
Combine Mixtures: Gradually add the dry ingredients to the wet banana mixture, stirring gently until just combined. Be careful not to overmix; it's okay if the batter is slightly lumpy.
Add Optional Ingredients: If using, fold in the chopped macadamia nuts, chocolate chips, and shredded coconut for extra flavor and texture.
Transfer to Pan: Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Bake: Bake in the preheated oven for 60-70 minutes, or until a toothpick inserted into the center comes out clean.
Cool: Once baked, remove the banana bread from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a wire rack to cool completely.
Serve: Slice and enjoy your delicious Maui banana bread! It can be served warm or at room temperature.