Mash the bananas and set aside.
In a bowl, combine the mashed bananas, sugar, eggs, and melted butter, and mix well.
Sift in the flour, baking powder, and salt, then mix until evenly combined.
Pour the batter into a loaf pan.
Bake in a preheated oven at 180°C for 40–45 minutes.
Let cool, slice, and serve.