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Prep 20 mins
Cook 45 mins
If your pre-baked tart shell has already cooled, place it in the oven just before you start the curd and heat it until warm, about 5 minutes. Serve the tart with lightly whipped cream.
- 1 large egg yolk
- 1 tablespoon heavy cream
- 1⁄2 teaspoon vanilla extract
- 1 1⁄4 cups all-purpose flour
- 2⁄3 cup confectioners' sugar
- 1⁄4 teaspoon salt
- 8 tablespoons unsalted butter, cut into 8 pieces and chilled (1 stick)
- 7 large egg yolks
- 2 large eggs
- 1 cup sugar
- 1⁄4 cup fresh lemon zest (4 lemons)
- 2⁄3 cup fresh lemon juice (4 lemons)
- 1 pinch salt
- 4 tablespoons unsalted butter, cut into 4 pieces (1/2 stick)
- 3 tablespoons heavy cream, chilled
- For the Dough: Whisk the egg yolk, cream, and vanilla together in a small bowl. Process the flour, sugar, and salt together in a food processor until combined. Scatter the butter pieces over the top and pulse until the mixture resembles coarse cornmeal, about 15 pulses.
- With the machine running, add the egg mixture through the feed tube and continue to process until the dough just comes together around the processor blade, about 12 seconds.
- Turn the dough onto a sheet of plastic wrap and flatten into a 6-inch disk. Wrap the dough tightly in plastic wrap and refrigerate for 1 hour. Before rolling the dough out, let it sit on the counter to soften slightly, about 10 minutes.
- Roll the dough out into an 11-inch circle on a lightly floured counter and fit into a 9-inch tart pan with a removable bottom. Set the tart pan on a large plate and freeze the tart shell for 30 minutes.
- Adjust an oven rack to the middle position and heat the oven to 375°F Set the tart pan on a large baking sheet. Press a double layer of foil into the frozen tart shell and over the edges of the pan, and fill with pie weights. Bake until the tart shell is golden brown and set, about 30 minutes, rotating the baking sheet halfway through baking.
- Carefully remove the weights and foil and continue to bake the tart shell until it is fully baked and golden, 5-10 minutes longer. Transfer the baking sheet to a wire rack and let the tart shell cool slightly on the baking sheet while making the filling.
- For the Filling: Whisk the egg yolks and eggs together in a medium saucepan. Whisk in the sugar until combined, then whisk in the lemon zest, lemon juice, and salt. Add the butter and cook over medium-low heat, stirring constantly, until the mixture thickens slightly and registers 170 degrees on an instant-read thermometer, about 5 minutes. Immediately pour the mixture through a fine-mesh strainer into a bowl and stir in the cream.
- Pour the lemon filling into the warm tart shell. Bake the tart on the baking sheet until the filling is shiny and opaque and the center jiggles slightly when shaken, 10-15 minutes. Let the tart cool completely on the baking sheet, about 1 1/2 hours. To serve, remove the outer metal ring of the tart pan, slide a thin metal spatula between the tart and the tart pan bottom, and carefully slide the tart onto a serving platter or cutting board.