If I called this “The best chicken casserole recipe in the world, ever”, I might get a bit of pushback from some purists who would tell me they have a superior list of ingredients. “What about lardons?” may be a valid question too. “Goodness, no white wine?” would be in the mix also. Some people may have views on my method too. However, I didn’t call it “the best chicken casserole recipe in the world, ever”. No, this is better than that. It’s Chicken Casserole Like Mum Used to Make and it really can’t be improved upon.