Cremini mushrooms are a surprisingly good source of niacin. Roasting is a great way to cook green beans, giving them crisp browned edges and intensifying their flavor.
Preheat oven to 450°.
Combine first 4 ingredients on a jelly-roll pan coated with cooking spray. Drizzle with oil; sprinkle with thyme and pepper. Toss well to coat. Bake at 450° for 30 minutes or until beans are lightly browned. Sprinkle with salt; toss to combine.
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