Preheat oven to 400°F. Line a rimmed sheet pan with parchment paper for easy cleanup.

Place thawed and thoroughly dried edamame into a medium bowl.

In a small bowl, combine the olive oil, garlic powder, salt, and black pepper. Add to the edamame mixture and toss to coat.

Sprinkle in the Parmesan cheese and toss again to coat the edamame evenly.

Spread the coated edamame in a single layer on the prepared baking sheet. Bake for 20 minutes, shaking the pan gently halfway through to ensure even roasting.

Remove from the oven and let the edamame rest for 5 minutes. Transfer to a serving bowl, garnish with additional Parmesan cheese if desired, and serve warm.