You may be all about pumpkins right now, but its our culinary duty to remind you that many other delightful vegetables are also at their peak. High on our list: butternut squash, mushrooms and fennel. And as it happens, this trio makes for an excellent pizza-topping combo. We start by roasting the veggies, then we pile them onto store-bought dough covered in creamy ricotta cheese (no red sauce or mozzarella here). Add a sprinkle of black pepper, fresh rosemary and parmesan, and youve got a dinner thats totally in season.