In a food processor, blend the flour with the butter. Do this in short bursts to achieve a crumbly consistency.
Add a tablespoon of milk to the mix and blend again until you can grab the crumbs and push them together to form a dough that sticks. Continue adding tablespoons of milk until the dough reaches the desired consistency.
Preheat the oven to 180°C. Roll out baking paper over an oven tray and onto an oven-proof dish.
Roll out the pastry over the paper (2 cm thickness), trim it to size, and poke holes in the dough using a fork. Seal the sides of the dough with a fork. Place another layer of baking paper over the dough and add oven stones, peas or rice for blind baking.
Bake the pastry for 15 minutes, then remove the oven stones and the top layer of baking paper. Continue baking for another 15 minutes until the pastry reaches a biscuit-like consistency.
In a bowl, mix a pot of crème fraîche with vanilla sugar and the eggs. Balance the mixture with salt.
Peel and core the apples. Slice them neatly. Once the short crust pastry has cooled, lay down the apple slices in a neat arrangement.
Pour the crème fraîche mixture over the apples.
If the apples are very sweet, use less sugar; if they are sour, consider adding more sugar.
Sprinkle salt and cinnamon over the top. Optionally, before adding the almonds, you can sprinkle some sugar over the pie and use a blow torch to caramelise it.
Top the pie with flaked almonds. Place the assembled pie back in the oven and bake until solid.