01 -
Preheat the oven to 425°F. Lightly coat a baking sheet with non-stick spray.
02 -
Combine the green beans with olive oil and mix in the parmesan, garlic powder, salt, and pepper.
03 -
Spread the beans out across the prepared baking tray and cook them in the oven for about 15 minutes.
04 -
Turn the beans over and roast them another 10 minutes, or until they're soft and cooked through.