Sainsburys also do there own verson of mullerlights which are 3 for £1 and are free.
On the EE between meals I take it you can't have something like a bit of ham it has to be something that is free on both green and red days?
Casserole - I think you can get the free 12wks if you haven't been to a slimming class in possibly 6mths and if you have already joined you also wouldn't be able to get it. Make an appointment with your doctor or just call your surgery to see what the criteria is
I made the free rice pudding that was in that link from nappy it was very yummy, I am going to make the chocolate muffins later.