Preheat oven to 350.
Grease a 4x6 baking dish (or four small ramekins) with oil of choice.
In a medium bowl, mash the banana.
Add the rest of the ingredients to the bowl and mix well.
Transfer to the baking dish.
Add some extra pineapples to the top, and bake for about 20 minutes.
If you are topping your oatmeal make with the glaze, whisk together the glaze ingredients, and then drizzle it on top.