I found a wonderful nutrisystem recipe for Crepes and filling that I use (you know always on a diet) That just uses a cottage cheese filling. I have never had true blintzes, but I think these are yummy.
You need to come over to our Home Baker's thread and share the recipe (hint, hint). Here's a link to get you there:
https://www.backyardchickens.com/t/921333/any-home-bakers-here