Put trimmed green beans and sliced mushrooms in a gallon ziploc with 2 Tbs each of olive oil and balsamic vinegar. Shake to coat, then spread evenly on a rimmed baking sheet. Roast at 450 for minutes, then sprinkle with kosher salt, pepper and parmesan.
Roasted Green Beans and Mushrooms Recipe - fresh green beans and mushrooms tossed in olive oil, balsamic, garlic salt, pepper and baked. SO simple and SOOO delicious! Ready in about 20 minutes. found on Plain Chicken
Roasted Green Beans with Mushrooms, Balsamic, and Parmesan (Video)