It's not really publishing as a private person. Which was impossible/illegal as people didn't have access to printing equipment. Yes you could publish it by sending it to a newspaper or magazine.
My dad had a bunch of samizdat books and periodicals. Some were typed on a typewriter, some were printed on a dot matrix printer (closest to what you can call directly accessible mass printing in the USSR). None of those were recipe books, these were all texts impossible to publish.