Ingredients

  • 10 1/2 ounces all-purpose flour
  • 1/2 teaspoon fine sea salt
  • 1 teaspoon granulated sugar
  • 6 ounces cold unsalted butter, cut into small cubes
  • 1/2 cup cold buttermilk plus more if needed
  • Caramelized Banana Pudding
  • 1 1/2 tablespoons unsalted butter
  • 2 1/2 tablespoons light brown sugar
  • 3 very ripe bananas, peeled and sliced into 1/4-inch thick slices
  • 3 cups milk
  • 1/2 cup sugar
  • 1 1/2 ounces cornstarch
  • 1/4 teaspoon fine salt
  • 6 egg yolks
  • 2 1/2 sheets gelatin, softened in cold water and excess water squeezed out
  • 1 teaspoon pure vanilla extract
  • 1/4 cup cold heavy cream
  • Hazelnut Whipped Cream, recipe follows
  • Hazelnut Brittle, recipe follows
  • 1 1/2 cups hazelnuts, skins removed
  • 2 cups sugar
  • 1/2 cup water
  • 1 1/2 cups cold heavy cream
  • 1 vanilla bean split, seeds scraped
  • 1 tablespoon superfine sugar
  • 1 1/2 tablespoons Frangelico

Method

  • Put the flour, salt and sugar in the bowl of a food processor and pulse a few times to combine.
  • Sprinkle half of the butter cubes over the top of the flour and process for 10 seconds.
  • Sprinkle the remaining half of the butter over the mixture and pulse until the mixture resembles coarse cornmeal, with some butter bits no bigger than peas.
  • With the motor running, add the buttermilk through the feed tube and process until the dough just begins to come together.
  • Transfer to a flat surface and lightly knead until the dough comes together.
  • Form into 2 flat disks, wrap in plastic wrap and refrigerate for at least 1 hour.
  • (You will need only 1 for the pie; the remaining dough can be frozen for up to 1 month.)
  • Lightly spray a 9-inch tart pan with a removable bottom with nonstick spray.
  • Roll the dough on a lightly floured surface into a 12-inch round that is 1/8-inch thick and fit it into the tart pan.
  • Roll rolling pin over tops of pan to trim dough flush with rims and lightly prick bottoms and sides all over with a fork.
  • Place in the freezer for 30 minutes.
  • Preheat the oven to 375 degrees F. Place the pan on a baking sheet.
  • Spray the shiny side of a 12 piece of aluminum foil and line the shell shiny-side down with the foil and fill with pie weights.
  • Bake on the middle rack in the oven until the crust sets and turns a pale golden brown, about 20 to 25 minutes.
  • Remove the foil and pie weights and continue baking until golden brown and baked through, about 15 minutes longer.
  • Transfer the tart pan to a baking rack and let cool completely, about 1 hour.
  • Melt the butter in a large saute pan over medium-high heat, add 1 1/2 tablespoons of brown sugar and cook, stirring constantly, until the sugar is melted and the mixture is caramelized, about 4 minutes.
  • Add the bananas and cook until bananas start to break down, and caramelize on both sides.
  • Add 2 cups of the milk, bring to simmer and scrape the bottom and sides of pan and carefully transfer the mixture to a medium saucepan.
  • Puree the mixture with an immersion blender until smooth; bring to a simmer.
  • In a bowl whisk the sugar, cornstarch and salt together until combined.
  • Add the remaining 1 cup of milk and whisk until the cornstarch is dissolved.
  • Whisk this mixture into the banana mixture and cook, whisking constantly, until the mixture thickens, about 4 minutes.Whisk together the remaining tablespoon of brown sugar and yolks in a small bowl until smooth.
  • Ladle some of the thickened mixture into the egg mixture to temper the yolks.
  • Pour the yolk mixture into the pot and cook until thickened, 3 to 5 minutes, WHISKING THE ENTIRE TIME.
  • Once the mixture has thickened let it come to a boil for exactly 1 minute, whisking a few times.
  • Remove from the heat, whisk in the softened gelatin and vanilla and strain through a coarse mesh strainer into a bowl.
  • Cover the surface of the custard with plastic wrap and chill in the refrigerator until set, at least 4 hours and up to 12 hours.
  • Once pudding is set, whip the custard in the bowl of a stand mixer with a whisk attachment on high speed until smooth, about 20 seconds.
  • Add the heavy cream and whip until light and fluffy, about 20 seconds longer.
  • Transfer the filling to the cooled pie shell.
  • Place plastic on top and let chill in refrigerator for at least 2 hours.
  • Mound the top with the hazelnut whipped cream and sprinkle with some of the hazelnut brittle just before serving.
  • Preheat oven to 325 degrees F. Spread hazelnuts on a baking sheet and bake until lightly toasted, about 5 minutes.
  • Let cool slightly and coarsely chop.
  • Combine sugar and water in a medium saucepan and cook (without stirring) over high heat until it becomes a deep amber caramel, about 8 minutes.
  • Remove from the heat and stir in the hazelnuts.
  • Transfer to a baking sheet lined with a silpat.
  • Cover with another silpat and using a rolling pin, roll the mixture as thin as possible.
  • Let sit until the caramel has hardened, about 20 minutes.
  • Once hard, removed from the silpan and chop into small pieces, using a chef's knife.
  • Combine cream, vanilla seeds, sugar and Frangelico in a bowl and whip using a balloon whisk or hand held mixer until soft peaks form.