Preheat the oven to 350 degrees.
Line a loaf pan with parchment paper, or grease it.
Peel bananas and place them in a medium size bowl, using a fork or other utensil mash the bananas until they are mostly mashed with just small chunks.
In a separate medium size bowl whisk together the flour, salt and baking soda until well mixed.
Place the melted butter in a large mixing bowl. Add in the white sugar, brown sugar and vanilla and mix with a wooden spoon until well blended.
Add in the two eggs and continue to mix to combine thoroughly.
Next add in the mashed banana and crushed pineapple and mix until well mixed.
Add the dry mixture into the banana mixture a little at a time, stirring between each addition until all of the flour mixture has been incorporated, do not overmix the batter.
Pour the batter into the prepared loaf pan and spread it out evenly.
Place the bread in the oven and bake for 55-65 minutes or until golden brown on the top and a toothpick inserted in the center comes out clean.
Remove the bread from the oven and place on a wire rack to cool in the pan for about 20 minutes. After it has cooled a bit you can lift the parchment paper and loaf out of the pan and place it on the rack to cool completely. If you have greased your loaf pan allow it to cool in the pan completely.
Slice & serve!