I have brought bread, chocolate, and banana with me. And I always bring macaroons always. The place I stay at expect them and not ONE box but usually 5 big boxes. Hold them in my carry on. Never have I been stopped. Maybe I should count my lucky stars.
I can understand apples, the seeds could planted. I will post here if I get stopped for the macaroon. And I never declare that I have a food item, forget that I really do. Oooops.