Creating roasted cherry tomatoes is a straightforward process. Follow these steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Baking Sheet: Line a baking sheet with parchment paper for easy cleanup.
3. Wash the Tomatoes: Rinse the cherry tomatoes under cold water and dry them thoroughly.
4. Place Tomatoes on the Sheet: Arrange the cherry tomatoes in a single layer on the prepared baking sheet.
5. Drizzle with Olive Oil: Drizzle the olive oil evenly over the tomatoes.
6. Season: Sprinkle the salt, black pepper, dried oregano, and garlic powder (if using) over the tomatoes.
7. Toss to Coat: Gently toss the tomatoes to ensure they are evenly coated with the oil and seasonings.
8. Roast the Tomatoes: Place the baking sheet in the preheated oven and roast for 25-30 minutes, or until the tomatoes are soft and slightly caramelized.
9. Check for Doneness: The tomatoes should burst slightly and have a golden color. Remove from the oven.
10. Garnish: Optionally, sprinkle fresh basil leaves over the roasted tomatoes for added flavor and presentation.

These simple steps will guide you in creating amazing roasted cherry tomatoes that are sure to impress.