Hot Fudge Sundae, in the freezer. Mmmm, so good, although I can feel myself get sicker with each bite. There's no way that can be good for you. Yet, so delicious.
Hot of course. I like pretty much any flavor, but my current box is Frosted Cherry since it was on sale at Target. I like Apple Cinnamon and S'mores a lot as well.
Also, this is done in the toaster oven. Microwave? Wtf? Savages.