I found this:

"dumplings made from potatoes, flour, eggs and cottage cheese"
http://web.wanadoo.be/brian.huebner/EM.htm

and this:

"NOODLES & CHEESE, LENTEN (kluski z serem postne):
In lightly salted water cook 16 oz egg noodles of choice until tender. Drain well, dot with butter or margarine (about 2 T and stir in about 2 c grated or crumbled farmer cheese. Dry cottage cheese and farmer cheese may be whirled to a powder in food-processor but do not overprocess because the whey (liquid) may separate from the cheese. Salt & pepper to taste."

http://www.polishnews.com/fulltext/chef/2001/chef59_1.shtml

OK, so pierogi I know. Kluski I don't.

...and no, this is *not a recipe post.