Ingredients
1/4 cup extra-virgin olive oil
1 medium onion, coarsely chopped
2 garlic cloves, peeled and coarsely chopped 1 celery stalk, coarsely chopped 1 carrot, coarsely chopped 1 pound ground chuck beef 1 (28-ounce) can crushed tomatoes 1/4 cup flat-leaf Italian parsley, chopped 8 fresh basil leaves, chopped Salt and freshly ground black pepper 1/4 cup freshly grated Pecorino Romano