Step 1

Put the flour, sugar, shortening, butter, and salt into a food processor. Blend until the mixture takes on the texture of wet sand. Add the water in one tablespoon at a time until a dough forms.

Step 2

Turn the dough out and roll it into a disc. Wrap it in cling film and refrigerate for at least 1 hour.

Step 3

Preheat your oven to 450F. Roll your pie crust and transfer to a baking dish, then prick the bottom with the tine of a fork and cut the excess dough with a knife.

Step 4

Bake the crust for 9 to 11 minutes, until light golden brown. Remove from the oven to cool completely, and set aside.

Step 5

Melt the chocolate over low heat, stirring occasionally. Set aside to cool.

Step 6

In another bowl, add the egg yolks and sugar.

Step 7

Beat the butter until light and airy.

Step 8

Pour in the chocolate and vanilla and beat to combine.

Step 9

In another bowl, whip the egg whites.

Step 10

Add the whipped whites a little at a time to the chocolate filling. Mix.

Step 11

Go on until you finish the whipped egg white.

Step 12

Whisk well until smooth.

Step 13

Transfer the chocolate filling to the pie crust.

Step 14

Place in the fridge to set for at least 2 hours.

Step 15

When ready to serve, top with chocolate shavings. Add whipped cream as topping just before serving.