I used this recipe to finish up some leftover cranberry sauce from Thanksgiving. (I made about a 1/2 portion of the recipe in a 8x8 glass baking dish.) It came out of the oven about an hour ago, and I've already sneaked 2 little squares! They taste good! I did the same process as many, split the crumbs to be half on the bottom, half on top. I probably would even put just a little more on the bottom, to give the squares a little more strength as you pick them up. I cut the butter down to a little more than half, and that worked out fine. I also added some dried cranberries to the cranberry sauce, and I'm glad I did. I wound up with a very thin layer of cranberry sauce when I spread it on, but it turned out to be more than enough. I wouldn't consider increasing the amount of sauce.
So far they taste GREAT warm, but they need to cool some more before I officially cut them into squares.
(edited to add: About half of them were stuck to the bottom of the pan, so I only got about 8 small squares and the rest was more "crumbly". Would line iwth aluminum foil next time.)