Preheat the oven to 375 degrees F.

** Coat the bottom of a 9 by13-inch baking dish with extra-virgin olive oil.

** Arrange zucchini slices on the bottom of the dish and season with salt and freshly ground black pepper.

** Evenly pour 1/3 cup of the heavy cream

** Sprinkle with 1/3 of a cup of mozzarella, 1/3 cup fontina and 2 tablespoons of the Romano.

** Sprinkle with 1/3 cup bread crumbs.

** Repeat layers, ending with bread crumbs.

** Cut the 4 tablespoons of butter into 1/2-inch cubes and sprinkle over the top of the dish.

** Line a baking sheet with aluminum foil, place the baking dish on top, and bake for 40 minutes until bubbling and the top is golden brown.