For years, the Decadent chocolate chip cookie has been delivered to customers in a plastic tray inside a plastic bag – largely intact, but for a few crumbs. But now, how the cookie crumbles – and if it crumbles – is a preoccupation for Loblaw Cos. Ltd. The Canadian grocery giant is reviewing prototypes to redesign the packaging for its best-selling biscuit. That’s because Loblaw wants to make it possible for customers to return an empty cookie container, rather than throwing it out. But designing one sturdy enough to be sanitized, refilled and reused while making sure cookies don’t fall...…For years, the Decadent chocolate chip cookie has been delivered to customers in a plastic tray inside a plastic bag – largely intact, but for a few crumbs. But now, how the cookie crumbles – and if it crumbles – is a preoccupation for Loblaw Cos. Ltd. The Canadian grocery giant is reviewing prototypes to redesign the packaging for its best-selling biscuit. That’s because Loblaw wants to make it possible for customers to return an empty cookie container, rather than throwing it out. But designing one sturdy enough to be sanitized, refilled and reused while making sure cookies don’t fall...WW…