Preheat oven to 350

Cream butter and sugar, then add beaten eggs, cornstarch, salt, vanilla, vinegar and corn syrup

Cut pastry dough 1 inch larger than pan to fold edges under and flute. Glaze bottom with egg white. Sprinkle pecans and chocolate on pie shell

Pour pie filing into crust

Bake on center each for 40 to 50 mins our until set. Cool on wire rack.

Note: pie is done when center reaches 200°F. Tap center surface of pie lightly, it should spring back when done. For easy clean up, spray in pan. If pie is overbrowning, cover edge with foil.