Preheat the oven to 350 degrees. Grease and flour a baking pan and set aside for later.
In a bowl combine the oil, the eggs, the yolk, the vanilla extract and the banana. Mix well.
Incorporate the sugar, the baking powder, and the cinnamon.
Add half the flour and mix. Pour the yogurt and whip up until incorporated. Finish mixing in the rest of the flour.
Pour the batter into the prepared baking pan and take to the oven. Bake for 35 minutes or until done.
Let it cool completely. Tightly wrap in plastic wrap and place inside a freezer friendly plastic container.
Freeze for up to 6 months.
When ready to eat take out of the freezer 3 hours ahead.