[UnFleshedOne]

Cook in big batches -- a big pot of soup lasts most of the week for two people if you eat it as one meal per day (dinner for example). Cook a batch of something else to provide lunches for a week (probably not soup based if you want to bring it to work), whatever you usually eat for breakfast (oats?) and you are set for a week with an our or two of cooking per week. This way you have 3 different meals per day and you only need to reheat them.

This is easier with meat based meals (better calorie density), but works fine with vegetable based meals too. Just get bigger pots. :)

All those people cooking for 30 mins per day are hardcore.