Mustn't Crumble

The golden glory that is apple crumble. That's apples, crumble and a few mysterious ingredients that I cannot list here for commercial, security and hygiene reasons. Here we see some examples, in foil tins, cooling ready for final packing and onward shipment to customers and end users.

Problem: Side one is side two and side two is side one. Not sure what to make of this. There is no side three.