I needed something to do with left over frozen perogies. I had 5 bags in the freezer with about 6-10 perogies in each one so decided to make them into a casserole. I had about 3 different flavours of perogies and they all blended. It turned out very well; my company named it. They said it was very good. This is handy and filling. I think it would be even better if I used sour cream instead of canned milk. I will have to try it like that next time because they all said, yes, make it again.