I used directions here (and wrote about making it in the previous post) to make a simple solar cooker from cardboard and tin foil. It took an hour to make the cooker. Our first recipe to try was chocolate chip cookies modified from the recipe from "The Vegetarian Mother's Cookbook." Here's the recipe we used:

Solar chocolate chip cookies

1/2 cup butter- softened
1/2 cup brown sugar 
1 egg
1 teaspoon vanilla
1 cup whole wheat flour
1/2 teaspoon salt
3/4 teaspoon baking powder
1 cup oatmeal
1/2 cup chocolate chips

Cream together sugar and butter. Add egg and vanilla. Mix in flour, salt, baking powder and oatmeal. Stir to combine. Add chocolate chips. Place tablespoonfuls on a dark cookie sheet. We used a black one that measures 8x7." It's black and fits in our solar cooker. Place pan in an oven bag (we didn't have one so we used a ziplock bag, it almost melted.) Place in oven. Check every 15 minutes, rotate pan 180 degrees after 30 minutes. Our cookies took about an hour to cook. 

We put the cookies in the oven...

They cooked and cooked....

And soon we had cookies!

Magical!! 

There are lots of recipes at the Solar Oven Wiki site and at the Solar Oven Society. I am looking forward to making more recipes soon.