½ cup grated Parmesan cheese
½ tsp. salt
¼ cup chopped flat-leaf parsley
1 28-ounce can crushed tomatoes
1 pound lean (90% or leaner) ground beef
1 tbsp. Italian seasoning
4 cloves garlic, minced
1 stalk celery, finely chopped
1 large carrot, finely chopped
1 large onion, finely chopped
2 tsp. extra-virgin olive oil