Cooking with the Sun: How to Build and Use Solar Cookers
Solar cooking is easy, free, and clean, and you can build a solar oven and a solar hot plate with a few dollars' worth of materials and  hand tools.Cooking With the Sungives simple directions for both, along with a host of recipes -- pizza, chicken, pecan pie --  that will convince you that low-tech is the way to go.  Endorsed by the American Solar Energy Society and the National Renewable Energy Laboratory.