how to cook chicken cordon bleu in oven
1 Preheat oven to 350 degrees F (175 degrees C). 2  Coat a 7x11 inch baking dish with nonstick cooking spray. 3  Pound chicken breasts to 1/4 inch thickness. 4  Sprinkle each piece of chicken on both sides with salt and pepper. 5  Place 1 cheese slice and 1 ham slice on top of each breast.eady In. 1  Preheat oven to 350 degrees F (175 degrees C). 2  Pound chicken breasts to 1/4 inch thickness. 3  Sprinkle each piece of chicken on both sides with salt and pepper. 4  Bake for 30 to 35 minutes, or until chicken is no longer pink.