Preheat the oven to 425°F
Wash and dry the green beans
Trim the ends of the green beans
Place the green beans on a baking sheet
Drizzle with olive oil
Sprinkle with salt and black pepper
Toss to coat evenly
Spread the green beans in a single layer
Roast for 15 to 20 minutes
Flip halfway through cooking
Remove when tender and lightly browned
Serve immediately