(Video produced by Baltimore's Yisroel Pollock)

Rav Shlomo Zalman Auerbach and Rav Elyashiv said that pretzels, Cheerios, and other Mezonos snacks are considered like bread and need to be Pas Yisroel during the Aseres Yemei Teshuva.

Rav Chaim Pinchas Scheinberg held that they are not like bread and do not need to be Pas Yisroel.

Granola Bars are steamed and do not come under these Halachos.