Orach Chaim 603 says that a person should avoid eating Pas (bread/baked goods) made by Kuthim (or non-Jews, Mishnah Berurah, ad loc.) during the Aseres Yemei Teshuva. Does this include cereals made from the 5 grains? (Cheerios, Shredded wheat, Honey Bunches of Oats, Fiber one, etc.) A sourced answer with an explanation would be appreciated.
Rav Herschel Shechter of YU every year reiterates that cereals are not bread but a cooked food. If Cheerios aren't bishul akum the rest of the year, they aren't bishul akum in the days of repentance.