01 -
Set oven temperature to 425°F (220°C).
02 -
Place diced sweet potatoes and trimmed green beans in a large mixing bowl.
03 -
Drizzle olive oil over the vegetables. Add garlic powder, onion powder, smoked paprika, salt, and pepper. Toss thoroughly to evenly coat.
04 -
Spread the seasoned vegetables evenly on a large baking sheet in a single layer.
05 -
Place baking sheet in the oven and roast for 25 to 30 minutes, stirring halfway through, until sweet potatoes are tender and golden.
06 -
Remove from oven, drizzle with lemon juice, and optionally sprinkle with grated Parmesan cheese before serving.