Add 1/2 cup rolled oats, 2 teaspoon chia seeds, 2 tablespoon brown sugar, and 1 teaspoon vanilla extract into glass jar.
Mix 2 teaspoons of instant coffee into 2/3 cup sesamemilk and pour into the oats. Stir well to mix the ingredients together.
Cover and refrigerate for at least 3 hours or overnight.
When you're ready to eat the oats, remove from the fridge. You’ll see that the oats absorbed a lot of the liquid, so you might want to add a little more sesamemilk before enjoying.
You can keep the coffee overnight oats in the fridge for up to 4 days.