I have made these with a turkey breast I got at the store, and also with just leftover turkey. You can also switch it up and use chicken in place of the turkey. I used sourdough bread and grilled it like a Panini.
This can be made into a freezer meal. What would be nice about this freezer meal is it is a quick one. So you come home from work, and toss it in crock-pot , clean up and then eat.
Freezer Meal: Add shredded turkey, parmesan cheese, and Caesar Dressing to ziploc. Write on bag: add to crock-pot and cook for 1 hour (thawed) or 2 hours (frozen)