Pappardelle with White Bolognese

Ingredients

• tablespoon olive oil
• ounces pancetta, finely chopped
• medium-size fresh sage leaves, divided
• finely chopped cremini mushrooms
• finely chopped yellow onion
• finely chopped carrot
• finely chopped celery
• leaves garlic cloves, minced
• fresh bay leaves
• teaspoon chopped fresh rosemary
• teaspoon chopped fresh thyme
• pound 85/15 lean ground beef
• pound ground veal
• dry white wine
• lower-sodium chicken broth or beef broth
• heavy whipping cream
• teaspoon kosher salt, plus more to taste
• teaspoon black pepper, plus more to taste
• teaspoon ground nutmeg
• package pappardelle pasta
• ounce Parmigiano-Reggiano cheese, grated , plus more for serving