The soffitt is covered with aluminumThe problem with the gutter has been fixed which caused the one soffit panel to take in water and rotSince the damage to the wood cannot be seen, can I just leave it be? Also, the soffit/ roof overhang is 5 feet.
Try parchment paper, or foilOr just let people eat them as you make them.
Wax paper can be found in any grocery storeIt's next to the plastic wrap and tin foil.
Sure you can do anything you want, but a responsible homeowner would remove the aluminum soffit panels and repair the damageYou will feel much better knowing it is repairedYou must have a ranch style house with a very low slope roof to be able to have 5' overhangs? This is even more reason to repair the damageYour soffit lookout framing members are helping support this huge overhang, so check it all out and fix what needs repaired.