What foods would you pack for a toddler?

Just realized when I first packed his bug out bag he was still on formula. He’s somewhat picky but he’ll eat anything if he’s hungry enough so that’s not a concern, just wondering how to make sure he gets the right nutrients.

So far I’ve considered bottles with pre portioned powdered milk I could add water too later, but it doesn’t keep super well (moisture ruins it). I can also pack shelf stable fruit and vegetable purée pouches, but they’re not super calorie dense.

Any ideas for something shelf stable, satiating and somewhat palatable to an 18 month old? Thanks y’all.