Making Garlic Parmesan Chicken Meatloaf is both simple and rewarding. Follow these steps for a successful dish:

1. Preheat the Oven: Begin by preheating your oven to 375°F (190°C). This ensures it reaches the right temperature before you bake the meatloaf.

2. Prepare the Pan: Lightly grease a loaf pan or line it with parchment paper for easy removal.

3. Mix the Ingredients: In a large mixing bowl, combine ground chicken, breadcrumbs, grated Parmesan cheese, chopped onion, minced garlic, eggs, parsley, oregano, salt, black pepper, onion powder, and milk.

4. Mix Thoroughly: Use your hands or a spatula to mix everything until well combined. Ensure there are no dry spots in the mixture.

5. Shape the Meatloaf: Transfer the meat mixture to the prepared loaf pan. Shape it into a loaf, smoothing it out evenly.

6. Add Topping: If desired, spread marinara sauce over the top of the meatloaf for extra flavor and moisture.

7. Bake: Place in the preheated oven and bake for 50-60 minutes, or until the internal temperature reaches 165°F (74°C).

8. Rest: Once fully cooked, remove the meatloaf from the oven and let it rest for about 10 minutes. This helps it retain its juices.

9. Slice & Serve: Carefully remove the meatloaf from the pan and transfer it to a cutting board. Slice it into thick portions and serve.