I'm trying to eat better. I know that fruit is mostly sugar, but at least there are some vitamins in there too. So, here is the easiest winter dessert I can think of:
Get a Granny Smith apple (or another firm, tart one).
Then microwave it for about two or two and a half minutes. It's done when the flesh is all soft inside the skin. Let it cool down for a few minutes, or you'll burn your mouth.