A mille-feuille, (“thousand-sheets”),also known by the names Napoleon in North America, vanilla slice in the United Kingdom, and custard slice, is a french dessert made of puff pastry layered with pastry cream.

Ingredients

For the cream
1 liter whole milk
100 g corn starch
6 egg yolks, from medium eggs
270 g granulated sugar
1 vanilla pod
100 g butter
200 ml heavy cream 35%, chilled

For the base
850 g puff pastry sheets
100 g icing sugar, for dusting + extra to serve

Directions

For the cream
In a pot, add 900 g of the milk and half of the sugar.
Slice the vanilla pod open with a small knife and scrape out the seeds. Add them to the pot along with the pod.
Place over medium heat for 5 minutes, until it comes to a boil.
In a bowl, add the egg yolks and the rest of the sugar. Whisk.
Add the milk and corn starch. Whisk until the ingredients are completely combined.
As soon as the milk comes to a boil, gradually add the egg yolk mixture while whisking continuously.
Transfer all of the mixture to the pot and place over heat.
Whisk continuously for 2-3 minutes, until the cream thickens.
Remove from heat, add the butter and whisk until it melts.
Remove the vanilla pod and transfer cream to a bowl.
Cover with plastic wrap, making sure the plastic touches the surface of the cream directly so that a film does not form.
Refrigerate for 2-3 hours.
For the base
Preheat oven to 190C.
Spread the puff pastry out on a working surface and cut each sheet into 12 pieces. You want 24 pieces total.
Dust one side of the puff pastry pieces with icing sugar and transfer to 2 baking pans lined with parchment paper.
Pierce them with a fork all over so that they don’t puff up while baking.
Bake for 15-20 minutes.
To assemble
Remove the cream from the refrigerator and mix with a spatula so that it can fluff up.
Add the whipped cream and mix until incorporated.
Spread some of the whipped cream on a serving platter so that the sweet won’t slide.
Add 6 pieces of the puff pastry and spread the cream over their surface with a spatula.
Repeat the same process until you have created 3 layers of puff pastry and cream.
Spread the remaining cream over the whole surface of the dessert.
Crush the remaining 6 puff pastry pieces with your hands and sprinkle them over the whole surface of the mille feuille.
Serve with icing sugar and ground cinnamon

Recipe via A. Petrtzikis