1 lb. fresh green beans
1 1/2 T olive oil
1 T balsamic vinegar
2 T parmesan cheese
Preheat oven to 450. Wipe mushrooms and slice.
Put cut beans and mushrooms into a Ziploc bag. Whisk together olive oil and balsamic vinegar and pour over, then squeeze bag or stir so all the beans and mushrooms are lightly coated with the mixture.