I want this "through the wall solar oven" but don't want to cut a hole in the house. Maybe a kitchen window? Barbara Kerr has had good success with this over in third world countries.
http://solarcooking.org/bkerr/DoItYouself.htm
http://solarcooking.wikia.com/wiki/Solar_Wall_Oven
If we southerners can use water coolers in our windows, why not solar ovens as well?
Have you ever thought of building a brick rocket stove? It’s simple:
https://www.youtube.com/watch?v=onMbSLuC7Oc
A simple solar oven made from a pizza box:
https://www.youtube.com/watch?v=kBmy-AeIzp0