1. Preheat oven to 400°. Place first 4 ingredients in a large roasting pan. Drizzle with olive oil, add sea salt and pepper, and toss to coat. Roast vegetables 1 hour 10 minutes or until tender.
2. Transfer vegetables to a lightly greased 13- x 9-inch baking dish. Stir in cream, fontina, and 1/2 tablespoon parsley; sprinkle top with Parmesan, breadcrumbs, and remaining 1/2 tablespoon parsley. Bake 10 minutes more or until bubbly. Serve hot.