I like the muffin top pans very much for making a consistent product. I have muffin top pans of ceramic and one of metal (stainless steel) and was surprised to find the stainless steel worked better. But I've also made them on plain cookie sheets and they were OK. My first attempts didn't work out because I didn't beat the egg whites long enough. Now I set a timer for 5 minutes and they come out good.