Fine. Assuming I actually saw the apple being created ex nihilo, I would not be able to use any evidence for anyone else, on account of the lack of evidence. The only way I could prove it would be to show there is no other way of the apple coming into existence, which is impossible. Therefore I would not be able to prove it to anyone else.
There's the answer to your challenge - it can't be done.
Of course, this is a hypothetical situation that cannot be applied to the real world as the real world has laws of physics, but even in this magical world you still wouldn't be able to prove it. I'm just saying this in case you were going to try and apply this thinking to God or Creation or something, but nobody would try to do something that stupid.