Kosherquest.org reports that caution should be used when buying Matzos to be sure that they are not Chometz or in the category of “Matzah Ashira.” Some examples of this are Grape Matzo, Grape Bit Crackers, Egg Matzo, Egg Matzo Crackers, Egg Matzo Snack Bits, Chocolate Covered Egg Matzo and Tam Tam Crackers. These items are only permissible for the elderly, ill or young children who are not able to properly digest regular Matzoh.
Yehuda Matzoh from Israel as well as Glick Matzos also make a Matzah look-alike as well as crackers made from tapioca starch. It is properly certified O/Up, however, keep in mind that the Bracha for these “faux Matzos” is shehakol and that they are not real Matzoh for any time that Matzoh is needed.
{Matzav.com}
oat matzah??
““Matzah Ashira” is only a problem when being Yotzei the K’zeisim on the 1st days. Otherwise you should be able to eat them halachic speaking.