Directions

1. 1Preheat oven to 400°F.
2. 2Line a pie pan with puff pastry and, using a knife, cut off the excess of dough at the edges.
3. 3Set this excess dough aside to make stars/shapes with which to decorate the pie.
4. 4With a fork, prick the dough on the bottom of the pie mold.
5. 5In a bowl, mix the custard flour with the cornstarch and sugar.
6. 6In another bowl, stir the egg with a fork and add the milk. Stir well, and slowly add to the flour mixture.
7. 7Stir constantly as you add the milk to avoid lumps.
8. 8Heat in a saucepan on the stove until thickened.
9. 9Pour this mixture in the tart pan.
10. 10Peel and quarter the apples.
11. 11Drizzle with a few drops of lemon juice so the apples don't brown.
12. 12Arrange the apples on top of the mixture.
13. 13Cut a few stars with the remaining dough and decorate the pie.
14. 14Finally, sprinkle with a mixture of 1 tablespoon brown sugar, 1 tablespoon Demerara sugar, and 1 teaspoon cinnamon.
15. 15Bake in preheated oven for 25 minutes.
16. 16Let cool before serving.
17. 17If the custard cream gets lumpy, pass it through a mesh sieve or grind it with a hand blender.