This is a very yummy sandwich to eat. I had it one time at a Mennonite wedding and it was delicious. I decided to tweak it a bit to make my life easier. Basically you cut your chicken breast in half. Then you flatten them as thin as you can. I put them in a plastic bag and smash with a rolling pin.
I then put them in a bag with a bottle of Italian dressing and let them marinate. The longer the better. We then grill them till perfection.
Serve with any toppings. We like Sweet Baby Rays BBQ sauce and ranch. My husband likes miracle whip. I did some fried onions as well. Very yummy.