Eat This Much is a tool for generating meal plans based on your nutritional requirements.

The developer of the site notes that this is a new project and more recipes are being added on a regular bases:

A much needed update to the diet generator is now up at EatThisMuch.com. It includes recipes, a more intelligent algorithm, and what I think are easier generator controls. Also new is my attempt at monetizing it by charging a monthly fee to make grocery lists and save more than 1 diet.
Right now the site has about 100 recipes, but I'm adding more every day. If you enter some and they look reasonably well written, I'll add them to the pool of recipes the generator uses. At the moment, the lack of variety can be noticable if you have very stringent food options.