Creating these delightful Oven Baked Parmesan Green Beans is easy if you follow these steps:

1. Preheat Oven: Start by preheating your oven to 425°F (220°C).
2. Prepare Green Beans: Rinse the green beans under cold water. Trim the ends and pat them dry with a paper towel.
3. Coat with Olive Oil: In a large bowl, drizzle the olive oil over the green beans. Toss them to ensure they are evenly coated.
4. Add Seasoning: Sprinkle the garlic powder, onion powder, salt, black pepper, and red pepper flakes over the green beans. Toss until evenly coated.
5. Add Parmesan: Gradually add the grated Parmesan cheese, ensuring each green bean gets a nice coating.
6. Transfer to Baking Sheet: Spread the coated green beans in a single layer on a baking sheet lined with parchment paper for easy cleanup.
7. Bake: Place the baking sheet in the preheated oven and bake for 15-20 minutes, or until the green beans are crisp-tender and slightly golden.
8. Serve Immediately: Once done, remove them from the oven and serve immediately for maximum crispness.

By following these straightforward instructions, you’ll achieve perfectly cooked Oven Baked Parmesan Green Beans that are sure to impress!