I baked a small (8 x

deep dish in an aluminum pan (cost .50) and the main difference was the sides didn't brown as much and it took a few minutes longer to bake.
The top was beautiful and, most importantly, the taste (according to my "testers") was great!
Will try a larger one (12 x 9?) and see how it works. I wasn't thinking about cooking/freezing just "assemble and go".