Forgot to mention Rose's GF Bakery in Evanston, though I have not tried anything chocolate from there.
You don't actually have to bake if you make an ice cream pie. Just crumble some storebought GF cookies, combine with melted butter, press into pie pan and freeze. Pile in softened GF ice cream and decorate with GF chocolates. Freeze again. (Transporting it might be an issue, but I have a soft-sided wheeling cooler that is as easy to manage as a light carry-on.) That's my DIY version of a good GF chocolate dessert.
Man : I can't understand how a poet like you can eat that stuff.
T. S. Eliot: Ah, but you're not a poet.