Personal finance blogger Trent often blogs about frugality in the kitchen.
Here is one article in which Trent discusses saving approximately $300 a year by instituting a "cheap supper night", one idea being a soup and bread night.
Food & Frugality: 2 of my favorite topics!
BTW, he also sometimes blogs about how to make cheap food. Here's one of my favorites: a detailed (with pictures!) instruction set on making homemade bread:
(This is Trent's picture).