Ingredients
Equipment
Method
- Bake the pastry layers. Preheat your oven to 400°F (200°C).
- Roll out both puff pastry sheets slightly on a lightly floured surface. Cut each sheet into 3 equal rectangular strips, giving you 6 strips total.
- Place the strips on a baking sheet lined with parchment paper. Prick them thoroughly with a fork so they don't rise too unevenly.
- Dust the strips generously with 1 tablespoon of the powdered sugar.
- Bake for 15 to 20 minutes until golden brown and crispy. Let them cool completely, then carefully slice each strip into 3 equal squares, for 18 small squares total.
- Sauté the apples. Melt the butter in a skillet over medium heat. Add the sliced apples, brown sugar, cinnamon, and lemon juice.
- Cook for 8 to 10 minutes until the apples are tender and coated in a glossy caramel sauce. For extra depth, add a splash of Calvados or another apple brandy once the apples have softened and let it bubble away for a minute.
- Remove from heat and let the apples cool completely before assembly.
- Whip the vanilla cream. In a large bowl, combine the chilled heavy cream, 2 tablespoons of the powdered sugar, and the vanilla extract.
- Whip on high speed until stiff peaks form. Transfer the cream into a piping bag, or a plastic zip-top bag with the corner snipped off.
- Assemble the desserts. To build one individual mille-feuille, place a pastry square on a plate. Pipe a layer of vanilla cream over the pastry, then arrange a layer of cooled caramelized apples on top.
- Place a second pastry square on top and repeat the cream and apple layers, then finish with a third pastry square.
- Dust the top layer with the remaining powdered sugar right before serving. Repeat to build the remaining 5 desserts.
Nutrition
Notes
Flavor booster: A splash of Calvados (French apple brandy) added to the apples while they caramelize deepens the flavor without leaving a noticeable alcohol taste once it cooks off. A pinch of salt in the caramel and a squeeze of lemon juice both sharpen the apple flavor too.
Prevent soggy pastry: Never assemble this dessert with warm apples or warm pastry. The heat will instantly melt the cream and soften the crunch.
Make ahead: Bake the pastry and cook the apples up to a day in advance. Keep the pastry in an airtight container at room temperature and the apples in the fridge. Assemble just a few hours before eating to maximize the crunch.
Richer variation: For a bakery-style dual-filling version, make a batch of pastry cream (crème pâtissière) alongside the whipped cream and alternate the two fillings between layers: pastry cream on the bottom layer, whipped cream on the middle layer. This balances the dense custard against the light whipped cream.
Clean slicing: Use a long serrated knife held at a 45 degree angle with a gentle sawing motion and almost no downward pressure, letting the blade teeth cut through the top pastry layer before slicing down. Alternatively, pre-slice the top pastry piece into portions before assembling, so you only have to cut through the soft filling when serving.
Large cake shortcut: To make one showstopper cake for 6 to 8 people instead of individual portions, bake the puff pastry sheets whole rather than cutting them first, weighing them down with a second sheet of parchment and a light baking sheet for the first 10 minutes so they stay flat. Layer the three whole sheets with the full batch of filling and apples, then chill the assembled cake for 30 to 60 minutes before serving so it slices cleanly.
Storage: Best eaten the day it's assembled. Leftovers can be refrigerated for up to 1 day, though the pastry will soften.
