Plenty of health food trends come and go, but granola has stood the test of time for good reason. Traditionally made with oats, nuts and other nutrient-rich add-ins, it contains fiber and healthy fats. Plus, it's the perfect pairing for other nutritious foods, like yogurt or fruit. Some people love making their own granola. It can be a fun little Sunday afternoon kitchen project, and it's easy to customize your favorite recipe a zillion different ways.