In a medium bowl, combine the rolled oats and chia seeds (if using).
In a separate bowl, whisk together the almond milk, maple syrup or honey, vanilla extract, and a pinch of salt.
Pour the wet mixture over the oats and stir until well combined.
Divide the mixture into two jars or airtight containers and seal them tightly.
Refrigerate overnight or for at least 6 hours.
In the morning, stir the oats and add additional milk if needed for desired consistency.
Top with your favorite fruits, nuts, or seeds before serving.