Quaker Oat Bran Hot Cereal gives you the fiber you want and the simple taste you love. Made from 100% oat bran, this hot cereal gives you the fiber your body wants and can also be used as a tasty, nutritious addition to many of your favorite recipes. Topped with fruit, nuts or a little bit of honey, Quaker Oat Bran Hot Cereal is more than good for you â it's delicious. 1  As part of a heart healthy diet, the soluble fiber in oat bran helps reduce cholesterol*. 2  6g of fiber and 3g of soluble fiber.