We're aiming for a middle ground with MealSquares. Even easier than Soylent (no prep) but also made of whole foods. Caveat: same as OP complaint, they last something like a month compared to 6+ months for most of our competitors.

We ran into the exact problems talked about in the article when trying to bake our prototypes in a home oven. Even heating is next to impossible. Working with a convection oven now is much better.