Prepare the pastry sheets and cream in advance, assembling the dessert just before serving.
Use ready-made puff pastry for a quicker recipe, or try homemade for an impressive touch.
Flavor the custard with lemon zest or enrich it with strawberries, berries, or chocolate chips.
Alternate layers of vanilla and chocolate cream for a show-stopping effect.
Slice the pastry with a sharp knife to avoid breaking the layers.
Give it a tiramisu twist: add crushed ladyfinger biscuits soaked in coffee and mix them with the cream.
Substitute whipped cream for pastry cream for a lighter version, or add hazelnut spread for a chocolatey version.
Let the assembled mille-feuille rest for 10 minutes before serving, to allow the flavors to blend beautifully.

How to Store Creamy Mille-Feuille

Store mille-feuille in an airtight container in the refrigerator for up to 1–2 days. Freezing is not recommended, as it affects the texture.
Note: over time, the pastry will lose some of its crispiness.