1. Preheat oven to 425°.
2. Place a jelly-roll pan in oven for 10 minutes. Place beans in a large bowl. Drizzle with oil; sprinkle with salt and pepper. Toss well to coat. Arrange green bean mixture in a single layer on preheated baking sheet. Bake at 425° for 8 minutes or until crisp-tender.
For baby: Omit black pepper. Cut the green beans into bite-sized pieces. Serve 3 to 5 green beans in a small bowl or on a rimmed plate.