What helps most is having a cache of food you can throw together easily. So you must get stocked up first. You don’t need me to tell you to keep a constant supply of baked beans in the house, but I remind you simply because this is the foremost fast way to give children something sustaining to eat. I know people go on about the added salt and sugar, but I can’t get worked up about it. It makes sense to watch for salt when they’re tiny. I never salted any cooking water – of pasta, vegetables, anything – or added salt later, until my children were 4 years and 18 months respectively. Then I decided that, if I wanted them to eat like us, it was inconsistent to refuse to allow them to season their food like us.