**1. Shred Your Own Cheese: Pre-shredded cheese contains anti-caking agents that can affect melting. Shredding your own cheese results in a smoother, creamier casserole.

**2. Balance the Flavors: Taste the filling before baking and adjust the seasoning to ensure it’s perfectly balanced.

**3. Use Fresh Ingredients: Freshly cooked chicken and high-quality dairy products make a significant difference in the final dish.

**4. Proper Mixing: Ensure all filling ingredients are thoroughly combined for even distribution of flavors.

**5. Crispy Topping: Don’t skimp on the butter for the topping—it ensures a golden, crispy finish.

**6. Even Baking: Spread the filling evenly in the baking dish to ensure it cooks uniformly.

**7. Resting Time: Let the casserole rest for a few minutes after baking to allow the filling to set, making it easier to serve.

**8. Garnish Wisely: Fresh parsley not only adds color but also a hint of freshness that complements the rich flavors.

**9. Temperature Control: Make sure your oven is properly preheated to ensure the casserole bakes evenly.

**10. Serve Immediately: For the best texture and flavor, serve the casserole hot and fresh out of the oven.