Mix thoroughly to combine. Be sure to break up any clumps of chia seeds.
Cover and place in the fridge overnight, or for at least 4 hours.
After refrigerating, stir and add your favorite toppings.
Notes
Tip: You can melt the Biscoff cookie butter in the microwave for 10 seconds, to help it mix through the oats and milk easier.Container: Use a container or bowl that holds at least 2 cups (16 ounces).Storage: Store overnight oats in the fridge for up to 4 days in an airtight container.