Only 2 weeks out of date? Would definitely feed it, plus cubes don't get flour mites like mixes
Mother always makes us eat bacon over a month out of date, although she actually chucked a bottle or peri peri sauce the other day that expired in 2007 (I was surprised!)
Just a quick caveat from me - make sure you tip the bag out and double check there is no mould, I learnt my lesson about mouldy feed at the bottom of a bag (in-date!) which caused toxic laminitis as it had contaminated the whole bag!