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1
Peel the apple and cut into bite sized pieces.
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2
Put the water and sugar into a pot and turn the heat on.
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3
When the sugar starts melting, add the apple and simmer until the apples soften.
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4
Transfer to a sieve and let cool.
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5
Bring the frozen puff pastry to room temperature.
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6
Make the custard cream.
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7
Combine the egg and milk into a bowl.
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8
Mix to cut through the egg white.
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9
Stir in the sugar, flour, and cornstarch.
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10
Add to the pot while straining.
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11
Turn the heat off when the cream thickens to your liking.
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12
Add the vanilla extract and let cool.
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13
Mix the cream very well with a whisk to avoid lumps.
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14
Roll out the puff pastry dough as thinly as possible.
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15
Line the mold with the puff pastry dough, and pour the custard cream.
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16
(Don't worry if it's not perfect.)
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17
Then add the simmered apples on top.
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18
Take the remaining puff pastry dough and cut it into strips, then lay on top in a lattice pattern.
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19
Brush on the egg glaze.
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20
Bake for 20 minutes in an oven preheated to 210C, then turn down to 180C and bake for another 10 minutes.
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21
Let cool once it's done baking, then go ahead and remove the mold once the bottom is cool enough to touch.