The original Oh's! cereal was introduced in 1980 by the Quaker Oats Co. It originally came in two varieties: "Crunchy Graham" and "Honey Nut". In 1988, they were renamed "Honey Graham" and "Crunchy Nut." Eventually, Crunchy Nut was discontinued and only Honey Graham was available.[1]
In 1989, Quaker went on to introduce a variety of flavors, including "Apple Cinnamon Oh!s",[2] "Apple Oh!s",[3] and "Fruitangy Oh!s".[4]
In early 2018, Post reformulated the cereal as "Honey Oh's" along with a box redesign. The new formulation no longer contains graham flour, coconut oil, brown sugar, oats and other original ingredients.[7][8][9]