A comforting and creamy casserole that combines the classic flavors of chicken cordon bleu—tender chicken, ham, and Swiss cheese—in an easy, one-dish meal perfect for family dinners.
Preheat oven to 375°F (190°C). Grease a 9x13-inch baking dish.
Place each chicken breast between two sheets of plastic wrap and pound to 1/4-inch thickness using a meat mallet or rolling pin.
Lay a slice of ham and a slice of Swiss cheese on each chicken breast. Roll up tightly and secure with toothpicks.
In a small bowl, mix panko, Parmesan, melted butter, garlic powder, thyme, salt, and pepper. Set aside.
In another bowl, whisk together heavy cream, chicken broth, and Dijon mustard.
Arrange the chicken rolls seam-side down in the prepared baking dish. Pour the cream mixture over the chicken.
Sprinkle the breadcrumb mixture evenly over the top of the chicken.
Bake uncovered for 40–45 minutes, or until chicken is cooked through (internal temperature of 165°F) and topping is golden brown.
Let rest for 5 minutes. Remove toothpicks, garnish with parsley, and serve warm.
Notes
For a lighter version, substitute half-and-half for heavy cream and use reduced-fat cheese. Leftovers can be stored in an airtight container in the refrigerator for up to 3 days.