Fill each jar with ½ cup of old-fashioned oats, ¾ cup of milk, some of the finely shredded carrot (about ¼ cup in each), 1 tablespoon of raisins, chopped walnuts, ¼ teaspoon of cinnamon, ¼ teaspoon of vanilla, and 1 teaspoon of brown sugar or maple syrup, if using. Stir to combine.
Tip: Sometimes, it's easier to mix everything in a large bowl and then divide the mixture into two jars.
Refrigerate:
Cover the jars with a lid and refrigerate for 4 hours or overnight.
Serve:
Warm up for 30 seconds in the microwave, or enjoy cold.
Notes
For more protein, swap the ¾ cup of milk in each jar for ½ cup of Greek yogurt and ¼ cup of water or milk (a total of 1 cup yogurt and ½ cup milk).