Oatmeal Oatmeal, also known as white oats, is ground oat groats (i.e., grains, as in oat-meal, cf. cornmeal, peasemeal, etc.), or a porridge made from oats. Oatmeal is high in fiber and, when made properly, makes a delicious breakfast. It begins as the hulled grains from oat plants, and can be processed and cooked in… Read More Calories and Nutrients in Oatmeal