Granola ingredients often include OATS, which is a four-letter word. OATS are a type of cereal grain that is widely cultivated for its edible seeds. They are usually eaten as porridge or muesli, but can also be used in baking and other recipes. OATS are a good source of dietary fiber, protein, and minerals such as magnesium and zinc. They are also high in antioxidants and have been linked to a number of health benefits, including improved heart health and reduced risk of certain cancers.