It's a macaroni conspiracy. You go to the cupboard and invariably most of it has escaped from the packaging and you have to sweep it up from the shelf. Or there is only that stuff that you bought in an emergency and it was never very nice, far too starchy so it stuck together when it cooked, so it was left at the back uneaten. Or you've got a lovely new packet, specially bought for tonight and the packet bursts and spills its contents across the kitchen floor. But a good cheesy sauce can effectively cover all manner of sins.
(another inspired by Creature who is downstairs cooking her favourite dinner)