| • | Preheat the oven to 375 degrees F.
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| • | In a large bowl, combine flour and salt.
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| • | Cut in the butter until the mixture resembles coarse crumbs.
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| • | In a cup, beat egg yolk, stir the cold water into the yolk.
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| • | Gradually stir the egg mixture into the flour mixture until dough can be packed into a ball.
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| • | On a clean dry surface, roll out 1/2 of the dough large enough to cover the bottom and sides of a 9x13 inch pan.
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| • | Lay the dough in the pan and place the cornflakes over the dough in the pan.
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| • | Arrange apple slices over the top of the corn flake layer.
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| • | Sprinkle the sugar and cinnamon over the apples.
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| • | Roll out the second half of the dough to cover the entire pan.
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| • | Lay over the filling and pinch the edges of the two crusts together.
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| • | Beat the egg white until foamy, and brush onto the top crust.
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| • | Bake for 45 to 50 minutes in the preheated oven, until golden brown. |
