2 boneless skinless duck breasts
1 medium red cooking apple, cored and cut into ¼ inch slices
1 medium onion, sliced
1 can sliced water chestnuts, rinsed and drained
½ teaspoon seasoned salt
¼ teaspoon freshly ground pepper

Prepare grill for barbecuing.  Place breast in center of 12 * 12 inch square of heavy-duty foil.  Repeat with remaing breast halves.  Arrange apple, onion and water chestnuts evenly over breasts halves.  Sprinkle evenly with salt and pepper.
Fold opposite sides of foil together in locked folds.  Fold end crimp ends.  Place packets on grate.  Grill for 30 to 45 minutes, or until meat is tender and juices run clear.