All the classic flavors of chicken cordon bleu — creamy Dijon sauce, ham, Swiss cheese, and a crispy Panko topping — baked together in one easy casserole dish.
0.25cupParmesan cheesefreshly grated, for the sauce
salt and black pepperto taste
2tbspfresh parsleyoptional, for garnish
2cupfresh broccoli floretsuncooked
4cupcooked chickenrotisserie or poached, shredded or diced
2cupdiced hamturkey ham may be substituted
2cupSwiss cheeseshredded; Emmental, Jarlsberg, or mild white cheddar can be substituted
0.25cupParmesan cheesefreshly grated, for the casserole layer
1cupPanko breadcrumbs
2tbspunsalted buttermelted, for the topping
Instructions
Preheat the oven to 375°F (190°C) and lightly grease a 2-quart casserole dish.
Melt 3 tablespoons of butter in a small saucepan over medium heat. Add the garlic and cook for about 30 seconds until fragrant.
Reduce the heat to low and whisk in the flour. Cook for 1 full minute, whisking constantly, to eliminate the raw flour taste.
Gradually whisk in the chicken broth, then the milk, adding slowly to keep the sauce smooth and lump-free.
Stir in the Dijon mustard, bouillon powder, and Parmesan cheese. Simmer gently, stirring frequently, until the sauce thickens enough to coat the back of a spoon, about 4 to 5 minutes. Season with salt and black pepper to taste.
Spread the cooked chicken evenly across the bottom of the prepared casserole dish.
Layer the raw broccoli florets over the chicken, then distribute the diced ham evenly over the top.
Pour the Dijon cream sauce slowly and evenly over the chicken, broccoli, and ham layers.
Sprinkle the shredded Swiss cheese and grated Parmesan evenly over the top of the casserole.
In a small bowl, stir together the Panko breadcrumbs and melted butter until the crumbs are evenly coated. Sprinkle loosely over the cheese layer without pressing down.
Bake uncovered for 30 minutes, or until the top is golden brown and the sauce is bubbling around the edges.
Remove from the oven and allow to rest for 5 minutes before serving. Garnish with fresh parsley if desired.
Keyword chicken cordon bleu casserole, chicken ham and swiss casserole, dijon cream sauce chicken, easy chicken casserole, weeknight chicken dinner