Frozen Berries: The Key to Perfect Overnight Oats

The author shares their experience with meal-prepping overnight oats using Mason jars, highlighting the convenience and cost-effectiveness of the practice. They recommend using frozen berries, which are cheaper and add flavor to the oatmeal. The author suggests that a three-pound bag of organic frozen berries from Costco can supply a toddler with two-thirds of their recommended monthly fruit intake for just $10.