Ingredients

  • 1/2 pound cold all-butter puff pastry
  • 2/3 cup whole milk
  • 1/4 cup sugar
  • 1/4 cup loosely packed fresh or dried whole lemon verbena leaves (see Note)
  • 1/2 vanilla bean, split, seeds scraped
  • 2 large egg yolks
  • 1 1/2 teaspoons cornstarch
  • 2 teaspoons all-purpose flour
  • 1/2 teaspoon unflavored gelatin
  • 1 tablespoon water
  • 1/2 cup heavy cream
  • 1 tablespoon seedless raspberry jam, melted
  • 2 tablespoons melted and strained apricot jam
  • 1 1/2 cups whole Mara des Bois or thinly sliced strawberries

Method

  • Preheat the oven to 375.
  • Line a large baking sheet with parchment paper.
  • On a lightly floured work surface, roll out the puff pastry to a 12-by-6-inch rectangle.
  • Trim the pastry into 4 neat rectangles, 6-by-3 inches each.
  • Cut each rectangle into 3 equal pieces and transfer them to the prepared baking sheet.
  • Chill for 10 minutes.
  • Poke each piece 3 times with a fork.
  • Cover the pastry with parchment paper and top with another baking sheet to prevent the pastry from puffing.
  • Bake for about 35 minutes, until the pastry is deep golden and crisp.
  • Remove the top baking sheet and parchment and let the pastry pieces cool completely.
  • Meanwhile, in a medium saucepan, bring the milk and sugar to a simmer.
  • Add the lemon verbena and the vanilla bean and seeds.
  • Remove from the heat, cover and let stand for 15 minutes.
  • Strain the milk into a heatproof measuring cup.
  • In a medium bowl, whisk the egg yolks with the cornstarch and flour.
  • Gradually whisk in the hot milk.
  • Pour the mixture into the saucepan and cook over moderate heat, whisking constantly, until the pastry cream is very thick, about 4 minutes.
  • Transfer the pastry cream to a bowl.
  • In a small glass bowl, sprinkle the gelatin over the water and let stand until softened.
  • Microwave the gelatin for 5 seconds, or until melted.
  • Whisk the gelatin into the warm pastry cream.
  • Press a sheet of plastic wrap directly onto the pastry cream and refrigerate for about 1 hour, or until it is thoroughly chilled.
  • In a medium bowl, using an electric mixer, beat the heavy cream until stiff.
  • Beat half of the whipped cream into the pastry cream.
  • Fold in the remaining whipped cream with a rubber spatula.
  • Refrigerate the pastry cream until chilled.
  • Arrange all of the puff pastry pieces on a work surface.
  • Brush 4 of the pieces with the raspberry jam and the remaining 8 pieces with the apricot jam.
  • Spoon a scant 1/4 cup of the pastry cream onto the 4 raspberry-topped pieces and 4 of the apricot-topped pieces.
  • Arrange the strawberries over the cream filling; reserve 4 of the whole or sliced strawberries for garnish.
  • Dollop any remaining cream over the strawberries.
  • Stack the raspberry layers on top of the cream-filled apricot layers, pressing lightly.
  • Top the stacks with the remaining apricot-topped layers.
  • Refrigerate the napoleons until chilled, 4 to 6 hours.
  • Garnish the napoleons with the reserved strawberries and serve.