Preheat the oven to 350F. Spray a 9×5" glass or ceramic loaf pan with cooking oil
In a bowl, mix together flour, salt, and baking soda
In the base of a stand mixer with a paddle attachment or with a hand mixer, beat the butter and sugar on medium speed until light and fluffy, around two minutes. Scrape down the sides and mix again for about 30 seconds
Add in the egg and mix again for about 30 seconds
Add in the ripe bananas and lemon juice start the mixer on low, slowly increasing the speed. Mix together until the bananas are well mashed and incorporated
Add in the dry ingredients and mix on low until just incorporated. Scrape down the sides and mix again for about 30 seconds
Fold in the shredded coconut until just incorporated
Pour batter into the prepared baking pan
Bake for 60-75 minutes, or until a tester poked into the center comes out clean (depending on your oven and baking pan it may take longer or shorter, we recommend to start testing after ~1 hour)