Smoothies can be an easy, quick, healthy meal -- especially if you portion out your ingredients beforehand -- but they don't always keep you full. A dash of rolled oats before you turn on the blender will make your smoothies heartier and more filling. Image from Kyle Brammer.
Whole rolled oats tend to blend better, and you don't have to cook them before adding them to your smoothie. They're also a great way to add fibre to your smoothie without adding a ton of kilojoules. Either throw the oats into your blender with the rest of your ingredients or soak them beforehand for at least an hour in milk or water (this softens them and will give your smoothie a smoother texture). Add half a cup (or less) per blenderful of smoothie to keep the consistency from getting too thick.
Oats Are the Key to a Satisfying Smoothie [The Kitchn]