Creamy chicken casserole is a very tender casserole with creamy sauce and lots of cheese. The sauce contains sour cream and milk, and this gives the whole casserole a special creamy texture. I used to think that the casserole is just pasta with something meaty. But now having cooked them at least 100 times, I can write a whole guide to casseroles. Without a shadow of a doubt, I will say that creamy chicken casserole is at my top.