01 - In a medium bowl or large jar, combine the oats, milk, Greek yogurt, chia seeds, honey or maple syrup, vanilla extract, and salt. Stir until well mixed.
02 - Fold in the diced strawberries and strawberry jam (if using).
03 - Divide the mixture evenly between two jars or containers.
04 - Cover and refrigerate overnight, or for at least 6 hours, until the oats are soft and the mixture is creamy.
05 - In the morning, stir the oats, add a splash of milk if needed, and top with extra strawberries, granola, or nuts before serving.