How to Make Your Own Instant Oatmeal Packets - Take 1/2 cup Oats, 1-2 tablespoons of brown sugar, put them in a snack sized bag and zip it up. Really. It’s that easy! You can add dried fruit, cinnamon, chocolate chips, whatever you love in your oatmeal. When you are ready to cook them, empty the packet into a bowl, add 3/4 cup of water or milk and microwave on high for 1 minute. Simple as that!