Homer's Cinnamon Donut Cereal
Wikisimpsons - The Simpsons Wiki
Homer's Cinnamon Donut Cereal was a cereal. Kelloggs released these and another cereal called Bart Simpson Peanut Butter Chocolate Crunch Cereal. They were sold the U.S. in 2001/2002.
They contain cinnamon O's cereal.