I think this one is from Pillsbury, but I have used it with just about every brand of cake mix and it always turns out.
Mix all ingredients well with a wooden spoon. Roll mixture into 1" balls and place far apart on cookie sheets. Flatten to 1/4" thickness with the bottom of a glass that has been dipped in flour. Bake at 375 for 6 minutes. Let cool a minute before removing from sheets. (they firm up upon cooling)
Eat them just as they are or buy a corresponding frosting flavor and frost while they are slightly warm.