- Thaw frozen filo dough in its pkg. 
- for 8 hours in the refrigerator, and then let it stand for 2 hours before you use it. 
- Once the filo dough has been opened and unrolled, place a slightly damp towel over it to prevent drying out. 
- Mix together green onion, mayonnaise, lemon juice, 2 cloves of the garlic and tarragon and set aside. 
- Combine remaining garlic with the butter. 
- Place one sheet of the filo dough on a board and brush it with about 2 tbs garlic butter. 
- Arrange a second sheet on top and brush it with another 2 tbs garlic butter. 
- Lightly sprinkle a chicken piece with salt and pepper, spread one side with the mayonnaise mixture. 
- Turn over one corner of the filo and top with more mayonnaise mixture (about 3 tbsp  in all). 
- Roll the corner of the filo over the chicken. 
- Fold side over top and roll again. 
- Fold opposite corner over then roll up. 
- Repeat for all chicken pieces. 
- Place slightly apart in ungreased baking pan. 
- Brush all packets with remaining garlic butter. 
- Sprinkle with Parmesan cheese. 
- Bake at 375 degrees for 20 - 25 minutes, or until golden. 
- Serve hot. 
- Ready in 50 min.