Creating Mediterranean Baked Fish can be straightforward if you adhere to these clear and concise steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C) to ensure even cooking.
2. Prepare Baking Dish: Lightly grease a baking dish with olive oil to prevent sticking.
3. Arrange Vegetables: Spread cherry tomatoes, sliced red onion, and Kalamata olives evenly in the baking dish.
4. Season Fish: Place the fish fillets on top of the vegetable bed. Season them with salt, pepper, and dried oregano.
5. Add Garlic and Citrus: Evenly distribute the minced garlic over the fish and vegetables. Drizzle lemon juice and zest over the top for added flavor.
6. Drizzle Olive Oil: Finally, pour olive oil over the fish and vegetables to enhance rich flavors during cooking.
7. Bake: Place the baking dish in the preheated oven and bake for 20-25 minutes or until the fish is opaque and flakes easily with a fork.
8. Garnish: Once baked, allow it to cool slightly, then garnish with fresh parsley before serving.

Following these steps will yield a delightful Mediterranean Baked Fish straight from your oven, perfect for sharing with loved ones.