Add all the ingredients except the yogurt to a Mason jar or a bowl. Give it a good stir.
Close the jar with a lid or cover the bowl with plastic film (or a sustainable alternative) and place in the fridge overnight (or for at least 4 hours).
The next morning, stir in the yogurt. Add your favorite toppings (fresh fruit, granola, nut butter).
Notes
Meal prep your overnight oats when you have some spare time. You can make a big batch and divide it up into smaller containers for simple preparation.
Storage tips: you can store the overnight oats in airtight containers in the fridge for up to 5 days.
Freezing tips: you can freeze overnight oats in single-serve airtight containers for up to 3 months. The best way to thaw them is to let them sit in the fridge overnight.
Nutrition facts were calculated for overnight oats with water.