My very simple way!! Cook Sweet potatoes in microwave, ( two big ones take about 7 minutes) until a fork goes in and out easily. Peel taters while still hot( use something to protect your hands from heat). Put taters in a bowl, dump in a big glob of brown sugar and at least half a stick of butter, and a teaspoon of cinnamon. Beat with mixer or masher. Place in casserole dish and serve. Can add marshmellow on top if you like, bake until they are browned on top. The sugar and cinnamon really are to your own taste. Add what you like. My guys like a lot of brown sugar, and a good taste of cinnamon, so I just taste until I have what I want. I usually have at least 4 big sweet potaotes. Good leftover too, ust reheat.