In a food processor, pulse 1 1/2 cups of shelled pistachios until finely ground. Add 1 cup of all-purpose flour, 1/4 cup of granulated sugar, and 1/4 teaspoon of salt. Pulse to combine.
Add 1/2 cup of cold, cubed unsalted butter and pulse until the mixture resembles coarse crumbs.
Press the mixture into a 9-inch tart pan with a removable bottom, making sure to evenly cover the bottom and sides. Use the back of a measuring cup to press the crust firmly and evenly.
Bake the crust for 15-18 minutes, or until lightly golden. Let it cool completely on a wire rack.
Make the Lemon Curd:
In a medium saucepan, whisk together 3/4 cup of freshly squeezed lemon juice, 1 tablespoon of lemon zest, 3/4 cup of granulated sugar, and 3 large eggs.
Cook the mixture over low heat, stirring constantly with a whisk, until it thickens and coats the back of a spoon. This usually takes about 8-10 minutes. Be patient—cooking over low heat prevents the eggs from curdling.
Remove the curd from the heat and stir in 1/2 cup of cubed unsalted butter until smooth.
Strain the curd through a fine-mesh sieve into a bowl to remove any lumps or bits of cooked egg.
Assemble the Tart:
Pour the lemon curd into the cooled pistachio crust and spread it evenly with a spatula.
Chill the tart in the refrigerator for at least 2 hours, or until the curd is completely set.
Garnish and Serve:
Before serving, garnish the tart with whipped cream, fresh berries, or extra chopped pistachios for a beautiful finish.
Slice the tart with a sharp knife, wiping the blade clean between cuts for neat slices.
Notes
Timing Breakdown
Prep Time (30 minutes): This includes measuring ingredients, grinding the pistachios, making the crust, and preparing the lemon curd mixture.
Cook Time (25 minutes): This includes baking the crust (15-18 minutes) and cooking the lemon curd (8-10 minutes).
Cooling Time (1 hour): This allows the crust to cool completely after baking.
Chilling Time (2 hours): This ensures the lemon curd sets properly in the tart.
Total Time (3 hours 55 minutes): This includes all the steps from start to finish, including cooling and chilling.
Nutritional Information (per slice):Calories: 320Fat: 20gCarbohydrates: 30gProtein: 6g