I made a similar inquiry a few years ago. What's the purpose of the food? If it's for snacks, then as long as you remember to finish or cycle the food, you can have a variety of different things that can survive temperature extremes for a few weeks. However, if you want some sort of emergency food that stay edible for years on end, the solution I came up with is the emergency rations. Let me know if you need a brand recommendation.

You can probably do freeze-dried food + water + a way to heat the water + a way to cook the food in water. But that seems too complicated for the sort of emergency situation I envision.