Oatmeal Jars are so convenient & versatile for busy mornings! Endless Flavor Combinations. Simply fill with HOT milk or water�finish getting ready for the day�.grab & GO! The kids & I prepared an entire weeks worth of jars together. We had a lot of fun creating our own unique mixes and combos! Allowing the kids to make their own little weekly �stash� of oat jars, sure makes mornings easier! Prepping ahead saves SO much time, and ensures everyone always gets a healthy breakfast.