Mash the bananas well until they are fully ripe.
In a bowl, combine the mashed bananas, eggs, sugar, and cooking oil and mix well.
Sift in the flour, baking powder, and salt, then mix until just combined.
Pour the batter into a mold and bake in a preheated oven at 180°C (356°F) for 40–45 minutes.
Let it cool completely, then cut into desired serving sizes.