3/4 pound whole-wheat fettuccine
1 tablespoon olive oil
1 small onion finely chopped (about 1 cup)
2 carrots, finely chopped (about 1/2 cup)
2 stalks celery, finely chopped (about 1/2 cup)
8 ounces mushrooms, finely chopped
3 cloves garlic, minced
1 pound lean ground beef (90 to 95 percent lean)
2 tablespoons fresh thyme leaves or 2 teaspoons dried
2 (14 1/2-ounce) can no salt added diced tomatoes with juice
1/2 cup low-sodium chicken broth
1/4 cup fat-free evaporated milk or regular whole milk
Salt and pepper to taste
1/4 cup grated Parmesan