In a small pot, bring milk to a boil over medium high heat. Once milk has started to boil, add the oats and stir to combine. Reduce heat to medium and cook for 5 minutes, or until most of the liquid has been absorbed.

Meanwhile, mash half the banana. Slice the other half of the banana. Add mashed banana to the oatmeal mixture whenever you are done mashing it.

Add the vanilla extract and cocoa powder. Stir until well combined. Remove from heat, cover the oatmeal and let it sit for 1 minute. Transfer the oatmeal to a container. Top with the almond butter and banana slices.

Serve hot, or refrigerate overnight and serve cold.