For the Crust:
Adjust oven rack to middle position and preheat oven to 350ยฐF (180ยฐC).
Line an 8- by 8- by 2-inch anodized-aluminum baking pan with a piece of parchment paper long enough to overhang the pan edges.
Combine flour, powdered sugar, salt, lemon zest, and butter in the bowl of a food processor.
Pulse to form a dry but pebbly meal, about 12 one-second pulses.
Scatter into the prepared baking pan and press into an even layer.
Bake until pale gold and firm, about 30 minutes.
Use hot or set aside until needed, up to 48 hours at room temperature if tightly covered.
For the Custard:
Combine sugar, whole eggs, yolks, lemon zest, and salt in a 3-quart stainless steel saucepan.
Whisk in lemon juice.
Cook over low heat, stirring constantly but not vigorously, until warm to the touch, about 3 minutes.
Increase heat to medium-low and continue cooking and stirring until thick and steaming-hot (custard should register 170ยฐF or 77ยฐC on an instant-read thermometer), about 8 minutes.
Immediately strain into the prepared crust and smooth into an even layer.
Cover with aluminum foil.
Bake until smooth and firm, about 10 minutes.
Remove foil and cool to room temperature.
Re-cover and refrigerate until cold and firm, about 1 hour.
To Serve:
Loosen chilled custard from sides of pan with a bench or butter knife.
Carefully tug loose and lift using overhanging parchment and transfer to a cutting board.
Cut into 16 two-inch squares, rinsing the knife clean between each slice.
Serve plain, lightly dusted with powdered sugar, or topped with lemon chantilly and crispy citrus-candied pistachios.
๐ A Quick Note About The Recipes At The Ferguson Recipes: We love sharing recipes, but please be aware that most haven't been professionally tested in our kitchen or independantly verified. Your safety is important to us, so always practice safe food handling and cooking techniques. Cook smart and use your best judgment!
Eggs: If you make a recipe that uses raw eggs, please consider using pasteurized eggs.
Allergens: Food allergens have not been identified in each individual recipe. Please use caution if you have any food allergies. Have questions about a specific recipe? Feel free to
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