Instructions
1. Pre-bake the crust
If using a regular crust, bake until lightly golden and let cool.
2. Make the lemon filling
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In a saucepan, whisk sugar, cornstarch, and salt.
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Cook over medium heat, stirring constantly, until thick and bubbly.
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In a small bowl, whisk egg yolks.
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Slowly pour a little of the hot mixture into yolks to temper them, then return yolks to the saucepan.
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Cook 2 more minutes until glossy and thick.
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Remove from heat and stir in butter, lemon juice, and zest.
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Pour filling into the pie crust.
3. Make the meringue
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Beat egg whites and cream of tartar until foamy.
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Gradually add sugar and beat until stiff, glossy peaks form.
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Spread meringue over the warm filling, making sure it touches the crust edges (prevents shrinking).
4. Bake
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Bake at 350°F (175°C) for 15 minutes, or until meringue is lightly golden.
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Cool 1 hour, then refrigerate 3–4 hours before slicing.
Tips for a perfect pie
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Spread meringue on hot filling so it doesn’t separate.
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Use fresh lemon juice for best flavor.
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Chill completely before cutting for clean slices.