INGREDIENTS
1 tbsp
olive oil
1 lb
extra-lean ground beef
1
carrot, finely diced
2
celery stalks, finely diced
1
onion, finely diced
2 cloves
garlic, minced
1/2 tsp
salt
1/2 tsp
pepper
1
jar tomato sauce
2 cups
beef broth
1 lb
spaghetti, broken in half
Freshly grated parmesan cheese (optional, for garnish)