REI sells a bunch of stuff that's similar other than not coming in as large a single serving size. ProBar and Bonk Breaker are the two I've found to be most palatable. Apart from the big brands at REI, there's a ton of smaller brands - for example: http://katesrealfood.com/. I suspect the reasons there's not more of this stuff in full meal size is that a third of a pound of dry, compressed food is not the most enticing thing to eat multiple times a day.

Speaking for myself, I also find that after a day of getting your ass kicked by Mother Nature, having something that somewhat approximates comfort food - warm, saucy, even if rehydrated - before crawling into your tent or bivy is a big morale booster.