Preheat your oven to 375 degrees Fahrenheit.
Chop your apples and add them directly into your 9x13 baking dish.
Add the almond milk, cranberries, vanilla, cinnamon, nutmeg (optional), and walnuts (optional). Stir everything together well and pat evenly to make sure all the ingredients are in the milk.
Cover with foil. Bake at 375 degrees for 45 minutes until the milk is baked into the oats.
Let rest for 5-10 minutes before serving.
Top each serving with your favorite sweetener such as 100% real maple syrup!