This looks so good, and very interesting to me; I've never seen a baked dessert using grapes before!
I found your post because @dipobasch featured you in his Pay it Forward Curation contest entry! Feel free to join us any week with an entry of your own :)
thank you! the bars were good for sure, but too sweet if topped with icing sugar imo, but that is how my husband's family would serve them, so when I serve them myself, I always have to put away some for me, without the icing sugar :D
I'm with you @indorecipe; there IS such a thing as too much sweet :)