For backpacking in the past I've used peanutbutter mixed with hunney and corn flower (not corn meal). I've also added Nutella to the mix at times. High calorie, high carbs, both simple and complex, lots of nutrients, and it tastes good too! I sometimes have it wrapped up in torillas or just plain.The person I got this from calls it "moose goo". I found the idea here: Moose Goo

Edit: forgot to say that for a BOB I'd just have a can of peanut butter, sealed pack of corn flower, hunney, and nutella.

I'm sure I'd get sick of it after a while, but for a week it will keep you alive and moving forward.