While Anonymous has anonymously thrown his hat into the ring, his opinion, unsubstantiated by even his/her name, smells a bit cheesy.
Just to be sure I consulted both Fowler's Modern English Usage and Penguin Working Words but it's so obvious that neither of those standard works gave a reference. The plural of cheese is cheeses.
It's a very versatile word and can ply an overly-sentimental expression (cheesy) or the object of that thought (cheese and kisses is rhyming slang for Missus) as well as a diversity of great-tasting foodstuffs.
The Big Cheese is a name often given to an employer, or a dominant figure in society and, of course, that name naturally falls on the biggest Cheese of all...
The earliest use of cheeses as a plural can be found in the New Testament which ascribed this name to the deity. Had he been only one God, he'd have been called Cheese, but since he is a tripartite God he was given the plural form and has been known throughout history as Cheeses.
Saying "Cheeses" is not that accurate in any context. I think the plural would be "Cheese"