1. Preheat oven to 450 Fahrenheit.
2. Rinse, trim and cut Brussels sprouts into quarters.
3. Toss the Brussels sprouts with olive oil and balsamic vinegar.
4. Spread onto baking pan and bake for about 20-25 minutes.
5. Toast the pine nuts in a dry pan until they start to brown.
6. When the Brussels sprouts are done roasting, remove from oven and place it in a serving dish. Toss with Parmesan cheese and sprinkle with pine nuts.