1 lb. gf penne
2 Tablespoons olive oil
2 ounces thinly sliced pancetta, finely chopped
2 medium celery ribs, minced
2 medium carrots, minced
2 large shallots, minced
1 cup cremini mushrooms, chopped
2 teaspoons fresh thyme, finely chopped
1 lb. ground beef
1 lb.
Italian sausageSalt and freshly ground black pepper
1 cup dry red wine
2 cups tomato puree
1 Tablespoon unsalted butter
1/4 cup Parmiagiano Reggiano cheese, grated (plus more for serving)