Boil the water in medium-sized pot with a lid. Add the oats, then turn off the heat. Add all the other ingredients: spices, carrots, vanilla. Choose which optional ingredients you want to add now or fresh in the morning. Stir, cover, and let sit overnight.
In the morning, add a little almond milk if desired, and re-warm it on the stove. Add maple syrup to taste and serve with more almond milk.
Crock pot method
Combine all the ingredients in a crock pot and set on the lowest setting for 6-8 hours. You may want to oil the bottom of the pot to prevent sticking.