Mash the bananas with the fork until they're smooth, having the consistency of pudding, or close to it.
Stir in the melted butter
3 oz butter
Add in the baking soda and the pinch of salt and stir
1 tsp baking soda, 1/8 tsp salt
Add in the sugar (if you didn't need to artificially ripen the bananas), vanilla extract, and the beaten egg, and stir
8 oz white or light brown sugar, 1 large egg, 1 tsp vanilla extract
Stir in the flour; the batter is now complete
8 oz flour
Pour the batter evenly into the loaf pan, scraping the sides of the mixing bowl with the rubber spatula to get it all