Here is a link to a company that bakes products that go into MREs.
Their emergency food pack is a real nice product to stash in your home or car for emergencies.

It has wheat biscuits and chocolate cookies that are individually packed (these are some of the MRE components) as well as some trail mix, canned chicken and tuna.

I tried the biscuit and cookie as well as an oatmeal cookie from this company and they are very palatable.

It is not perfect but it is a great start.
It is missing veggies and condiments but the calories, quality of the ingredients and the way it comes packaged (it is in a sealed airtight pouch) makes this a pretty good deal.

Costco was selling two for $20 I think.

http://www.caravantrd.com/products/emergencyfoodpack.htm