I recall two friends of mine trying Melted at Taste of Madison last year and being left unimpressed. I never tried Melted until now. I ate the gold standard sandwich from the Melted food cart today, and I, too, was left unimpressed.
The bread was cooked nicely and had a nice crunch. The sandwich appeared to have no seasonings, though, as it was simply bread and cheese. I was expecting much more considering Melted's "The Cadillac of Grilled Cheese" slogan. My sandwich from Melted was no different than a grilled cheese I make at home.
A concern for me was that I paid $6 and received a standard grilled cheese sandwich, sliced in half. I've paid similar prices at other Madison-area food carts and got much more bang for my buck.
Madison has a lot to offer in terms of food carts, but Melted will not be at the top of my list of favorite food carts.
NOTE: To address the comment from the owner posted on my review, I drafted my review on a Thursday after eating at Melted when it parked at the Demco lot, but I did not officially post my review until a Friday. When posting on Friday, I failed to edit my "today" to "yesterday" in the first paragraph.