Todd and I had chicken cordon bleu on our wedding day, and I have made a mock chicken cordon bleu ever since. This is how I make it:
Thick chicken breasts (we buy them fresh when on sale for $1.99/lb at the store)
Thick Slices of Ham
Swiss Cheese (we use mozzarella because we get it for a good price at Gordon Food Service)
Preheat oven to 350
Cut the chicken breast in half – but not the whole way through. Just enough to fold over.
Fold over the chicken breast, and place a piece or two of ham and a couple of pieces of cheese. Fold the flap back over and secure with a toothpick.
Put some bread crumbs in a bowl, and roll the chicken cordon bleu in the breadcrumbs to cover.
Bake for 35-45 minutes or until cooked the whole way through.