Fantastic casserole. My new way of doing this is to partially cook the sweet potatoes, peel, then grate. This is faster than the method suggested so that's what I do. I find that there is no need for cooking the potaoes in the butter as they are sweet enough without and it cuts some of the fat. Finally I am not a huge fan of dill as it does tend to overpower a dish so I only used 1 teaspoon. The entire family agrees that this is delicious.