The Napoleon dessert is a guaranteed success

Ingredients
For the base:
3 sheets of rectangular puff pastry (ready-to-use or homemade)

Powdered sugar for caramelizing (optional)

For the diplomatic cream (whipped cream + pastry cream):
500 ml whole milk

4 egg yolks

120 g sugar

40 g cornstarch

1 sachet of vanilla or 1/2 vanilla bean

250 ml cream

1 tablespoon caster sugar (for cream)

For the decoration:
powdered sugar

Melted dark chocolate (optional)

Blueberries or raspberries (optional)