Preheat the oven to 185℃ (365℉).
In a bowl, mash the extra ripe bananas.
Add the oil, milk, and vinegar. Mix well to combine.
Now add the remainder of the ingredients except for the remainder of the bananas and the extra brown sugar. Mix well to combine.
Grease a baking sheet, dust it with the extra brown sugar.
Cut the remainder of the bananas (the ones not so ripe) in half, place it in the baking tin on top of the dusted brown sugar.
Put it in the oven for 40 minutes. Serve it while still warm.