This appetizer pizza pairs the flavors of roasted butternut squash and fresh sage with creamy-rich Alfredo sauce, shaved Parmesan cheese and melting bits of crumbled blue cheese-baked golden and delicious on artisan flatbread. For this easy-to-assemble pizza, add toppings as needed, based on the size of flatbread you are using in recipe. For added convenience, alternate whole butternut squash with refrigerated diced butternut squash.