OK, I don't know if this is really Boston style, but my friend's grandma in Boston made the best eggplant parm and I found out the secret ingredient was American cheese.
The preparation was rather impromptu. I sliced the eggplant in rounds. Then breaded using the triple layer method. Dredged the slices in chickpea flour, then in a soy sauce/balsamic vinegar/broth mixture, then in mazo meal seasoned with Italian seasoning mix. I actually then baked them instead of my usual frying. Still good. I made an American Cheeze sauce from the Uncheese cookbook. And I made a tomato sauce from some sun dried tomatoes and shitake mushrooms. Layered it all up and put it in individual small baking dishes. Then I flipped it upside down and drizzled it with some more thinned American Cheeze sauce. I think there's an Italian grandma out there that would be proud.