We generally carry several pre prepared meals such as green chicken curry, spag bol sauce, beef and onions in red wine, etc etc etc sealed in vaccuum seal bags. Then it is a simple case of mashing some spuds or preparing some rice or pasta and we're all done.... Found we can watch the accompaniments cooking while enjoying a glass of the good stuff! If we get in a little earlier then obviously we go the full three course dinner, white table cloth, candles and alike!!! (I wish!)
Cheers.