For any of these, bake the boneless, skinless breasts at 350 degrees for 35-40 minutes in a covered casserole dish.
Cover each breast with a slice of ham or prosciutto, then a slice of provolone. If desired, also put some ripe tomato slices under the cheese.
Pound each breast flat, cover with thin slices of mozzarella, sprinkle lightly with cinnamon, and place an apple wedge in the center. Roll chicken around apple wedge and secure with toothpicks.
Cover breasts with onion slices, top onions with lemon slices, spoon brown sugar on top, then a light coating of ketchup. Comes out tasting like barbecue all the way through.
Cover breasts with pesto and add Parmesan on top to taste. Alternately, pound them flat, cover with pesto, and roll up, securing with toothpicks.