Place all the ingredients in the crock pot and stir to combine.
Cover and cook on low for 4-8 hours (note that the cooking time can vary depending on your crock pot. Crock pots without non-stick surfaces tend to get hotter, so you’ll want to stick closer to a 5 hour cooking time).
*You can also use oat, almond, rice or any plant based milk if you want to make the oatmeal vegan.