Creamy Chicken Cordon Bleu Casserole Step-by-step instructions

Before you start

Before beginning, ensure all ingredients are measured and ready to use. Preheat your oven to 375°F (190°C) to ensure it reaches the target temperature by the time the assembly is complete. Prepare the baking dish by lightly greasing it with butter or cooking spray to prevent sticking.

Have your meat thermometer handy to verify the internal temperature of the chicken during the final stages of baking, which is crucial for food safety and ensuring the chicken remains tender and fully cooked throughout the entire casserole.

Instructions

Mixing the Base

1. 1Prepare the Base
   Preheat the oven to 375°F (190°C). In a large mixing bowl, combine the cooked egg noodles, cubed chicken, and diced ham. Toss gently to ensure the ingredients are evenly distributed throughout the mixture before adding the sauce components.
   Look for The mixture should be well combined and ready for the sauce.
   Tip Ensure the chicken is cut into uniform sizes to promote even cooking throughout the casserole.

At the end of this phase, the chicken, ham, and noodles should be thoroughly combined in the large bowl. The mixture should appear uniform, with the ingredients distributed evenly. Ensure there are no large clumps of noodles or chicken, which will help the sauce coat everything properly in the next step. The bowl should be ready to receive the creamy Dijon sauce for the final mixing stage before transfer to the baking dish.

Creating the Sauce

2. 2Create the Dijon Cream Sauce
   In a small saucepan, whisk together the heavy cream and Dijon mustard over medium heat until slightly thickened. Pour the warm sauce over the chicken and noodle mixture in the bowl. Stir thoroughly so every piece of chicken and noodle is well coated in the creamy sauce.
   Look for The sauce should be smooth and coats the back of a spoon.
   Tip Do not let the cream boil vigorously, as it might separate; keep it at a gentle simmer.

The Dijon cream sauce should be smooth, velvety, and have a pale, creamy color with visible specks of mustard. It should be thick enough to coat the back of a spoon without running off immediately. When added to the bowl, it should coat all ingredients evenly. The kitchen should smell faintly of mustard and cream, indicating that the flavors have been properly integrated into the liquid base before the final assembly and baking process.

Baking to Perfection

3. 3Assemble and Bake
   Transfer the mixture to a 9x13 inch baking dish and spread it out evenly. Sprinkle the shredded Swiss cheese over the top. Bake for 30 minutes, or until the chicken reaches 165°F (74°C) and the cheese is golden and bubbling. Let rest for 5 minutes before serving.
   Look for The cheese should be melted, bubbling, and golden brown.
   Safe temperature 165°F (74°C) internal temperature (poultry)
   Tip Use a meat thermometer to ensure the chicken is cooked through to the correct internal temperature.

Upon completion of the baking phase, the casserole should look golden and inviting, with the cheese fully melted and bubbling. The aroma of toasted cheese and savory ham should fill the room.

The sauce should be bubbling around the edges of the baking dish, and the internal temperature of the chicken should have reached 165°F (74°C). The dish should be firm enough to hold its shape when scooped, yet remain moist and creamy for the best eating experience.

Common mistakes

A common mistake is overcooking the chicken before it goes into the oven, which leads to dry meat. Since the chicken finishes cooking during the 30-minute bake, ensure the initial cubes are raw but cut evenly.

Another error is using a cheese that does not melt well; stick to Swiss or Gruyere for the classic flavor. Avoid adding too much salt initially, as both the ham and the cheese provide significant sodium to the dish. Finally, do not skip the resting period, as it allows the sauce to thicken properly.

How to tell it’s done

The casserole is done when the chicken has reached an internal temperature of 165°F (74°C). You can verify this by inserting a meat thermometer into the largest piece of chicken in the center of the dish.

Visually, the top should be golden brown and the cheese should be bubbling across the entire surface. The sauce should be thick and creamy, not watery, and the edges of the noodles should be slightly crisp. Always allow the dish to rest for at least 5 minutes before serving to let the sauce set.

• Poultry: 165°F (74°C) in the thickest part