(This venue is closed.) The topping is simplicity itself.
After a look-see in the back room, where the brick oven was at rest (this was late afternoon), I snared a square of Dom's tomato focaccia ($1.50 or so). With my first quick bite (this was late for lunch, too) I detected olive oil, garlic, and what I took for tomato sauce, till something fell with a loud fwop onto the foil I was cradling underneath: a chunk of tomato, from the stem end. A pause, and a closer inspection, revealed crushed tomatoes, not mere sauce.
You might also reasonably identify this as pizza marinara, but by any name it's an especially rich, flavorful slice.
Dom's Bakery Grand
506 Grand St. (5th-6th Sts.), Hoboken, New Jersey
201-653-1948