My grandson helped, they are his hands in the photos. The pics are fairly much self explanatory, simple tools and aluminium tops from drink bottles are all you need.
Cut along the dotted line!
Pull out the insert. Fold the edge down a little with smooth nosed pliers.
File the edge down to a 'pie dish' depth.
Smooth the top and Voila!
Cook a yummy pie in your new pie dish. Don't look too closely, I'm not a poly clay artist!