In a mixing bowl, add the old-fashioned oats, almond milk, Greek yogurt, chia seeds, ground cinnamon, honey, and vanilla extract. Stir well until all ingredients are thoroughly mixed.
Slice the banana and mix it with the orange juice in a separate bowl. This will prevent the banana from browning and add a citrusy flavor.
In your chosen jar or container, start by adding half of the oat mixture. Then, layer on half of the banana and orange juice mixture, followed by half of the raspberries. Repeat this layering process with the remaining ingredients.
Sprinkle the shredded coconut on top of your layered oatmeal. This will add a delightful crunch and enhance the tropical flavor.
Cover the jar or container and place it in the refrigerator overnight. In the morning, give it a good stir and enjoy your Refrigerator Oatmeal with Bananas and Berries straight from the jar or transfer it to a bowl!