Preheat the oven to Bake at 350°F.
In a 9x13 baking dish or casserole dish combine the oats, oat milk, water and vanilla extract. Set aside and let soak while preparing the other ingredients.
Once prepared add the apples, blueberries and spinach to the soaked oats and mix.
Sprinkle the cinnamon, nutmeg, flaxseed and mix in.
Bake for 45 minutes.
Serve fresh from the oven and enjoy with a cup of hot tea!
