Preheat the oven to 350°F (175°C) and grease an 8x4-inch loaf pan.

Cream together softened butter and sugar until light and fluffy, about 2-3 minutes.

Add eggs one at a time, beating well after each addition. Fold in mashed bananas, crushed pineapple, coconut, and optional extract.

In a separate bowl, whisk together flour, baking powder, baking soda, and salt. Gradually stir dry mixture into wet ingredients until just combined.

Pour the batter into the greased loaf pan and smooth the top.

Bake for 65-70 minutes, or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes before transferring to a wire rack to cool completely.