I have found in the article (p. 8 of the PDF) of Eliezer Papo that it is
מאכל ספרדי דומה לבורקס שלנו היום – כיסנים ממולאים בבשר או בגבינה.
a Sephardic food similar to our bourekas today – dumplings filled with meat or cheese.
It says that it is the same as the current empanada, so Robev's and Joel K's guess was correct.
dinonline responds to your question as such
The idea of pas shel shacharis — morning bread, or breakfast — is not
an “obligation,” but is stated by the Sages of the Gemara by way of
good advice. The Gemara writes that no less than 83 ailments are
countered by “morning bread,” and a number of additional benefits are
also mentioned, such as the ability to ...
I have asked Kosher Miami (email@example.com) and they responded the blessing was sheakol (as pcoz suggested in comments as well). So there is no way to wash on bread like this and its final blessing is borei nefashos.