8 oz. mushrooms, sliced in 1/2 inch slices, any kind
1 lb. fresh green beans or frozen thin green beans
1 ˝ tablespoon extra virgin olive oil
1 tablespoon Balsamic vinegar
salt and fresh ground black pepper to taste
2 tablespoons finely grated parmesan cheese

Preheat oven to 450 degrees.

Wash mushrooms, drain and dry. While mushrooms are drying, trim and cut beans in half. Cut mushrooms into slices 1/2 inch thick.

Put cut beans and mushrooms into a Ziploc bag or plastic bowl. 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. Arrange on large cookie sheet, spreading them out well so beans and mushrooms are not crowded.

Roast 20-30 minutes, starting to check for doneness after 20 minutes. Cook until beans are tender-crisp, mushrooms are cooked, and all liquid on the pan from mushrooms has evaporated.

Season beans to taste with salt and fresh ground pepper, then sprinkle with finely grated parmesan. Serve hot.