In a jar or container with a lid, combine the rolled oats and chia seeds.

Add the unsweetened non-dairy milk and pure maple syrup to the jar.

Stir the mixture until all ingredients are well combined.

Cover the jar with a lid and place it in the refrigerator overnight (or for at least 4 hours).

In the morning, give the oats a stir and enjoy them cold or heated in the microwave for 30 seconds to a minute.

You can also add additional toppings to your overnight oats such as fresh fruit, nuts, or seeds.