Preheat your oven to 350F.
In a large bowl, mash well the bananas with a fork.
To the mashed bananas add the egg, light coconut milk and maple syrup. Whisk until well combined.
To the wet ingredients, add the rolled oats, baking soda, baking powder and salt. Mix to combine.
Add the chopped walnuts and dark chocolate. Stir until well combined.
Spray an 8x8 pan with non-stick cooking spray. Pour your banana oatmeal mixture in your prepared pan.
Bake for an hour. You are looking for the top and edges to be nice and dark golden.
Remove from the oven and let cool for 10-15 minutes before serving. This banana baked oatmeal is great served warm with a drizzle of maple syrup, but I also love to refrigerate it and eat it cold when I am on the go.
This banana baked oatmeal can be stored covered in the refrigerator for up to 3-4 days.