Tuna salad. Almost all of the ingredients are stable or long lasting and it's very tasty and filling.
Ingredients are
A can of tuna ("in oil) is best, "in water" turns tuna to mush)
Mayonnaise
Finely diced onion
Diced pickle
Diced celery, lettuce or other leafy green
Fresh or dry dill (optional )
Garlic powder (optional)
Small drizzle of olive oil (optional, I use it when I use less mayo)
American cheese (served on bread of choice, also optional)
It can be served on most breads as a sandwich or crackers. I recommend the bread be toasted as well
Directions:
Dice components, drain tuna, stir, add mayo, stir, serve on carb of choice.
I mean I don't know what you're expecting to cook without dirtying a couple kitchen utensils. You can make the salad in a couple minutes and like half the ingredients are optional.