Simple, cheap, easy to pack, and easy to cook while having no need for keeping things cold or cool meets my definition of easy meals for a camping/fishing trip (not backpacking). Therefore, I would take what I've been taking since I was a teen back in the late 1960's, namely: 1) coffee, since I like good coffee I grind the beans before I go and put it into a Tupperware or similar container along with a measuring scoop; 2) pancake mix, all you do is add water; 3) pancake syrup in a plastic bottle; 4) canned things like chili, ravioli, spaghetti, stew, corned beef, macaroni & cheese, etc., all you need to do is take the top off the can, heat it on the camp stove, and you have a meal; 5) powdered milk, just add it to my coffee or add water if I want milk; 6) a few gallons of water, can be tap water or whatever spring or purified water you desire; 7) Gatoraid mix or something similar, helps replenish the eletrolites you lose when walking the river and casting; and 8) fresh apples or any dried fruit, cut and add to the pancake mix for a great breakfast or to eat as a snack or dessert;
As can be readily seen, it isn't gourmet; but it will keep you alive in a more or less nutritionally ballanced manner. And none of these items needs to be kept cool or cold. No fuss, no muss.