In a food processor, add the animal crackers, salt and brown sugar. Process until only crumbs remain. Add the melted butter and pulse until combined and it resembles wet sand. Dump into the bottom of a deep dish pie pan.
If you don’t have a deep dish pan, you wont need this entire amount. You can remove about ½ cup, spray the insides of a muffin tin make 2-3 small "mini pies" (remove from muffin tins before filling).
Starting with the sides, assemble to crust. Press very firmly into place.
Put 1 egg white (use the yolk for the curd) plus 1 tbs of water in a small bowl and beat until well combined. Brush the insides of the crust with the egg wash.
Bake at 350 for 18 minutes.
