Dish📝 About This Recipe
Transport your senses to the tropical shores of Islamorada with this quintessential American classic. Featuring a velvety, tart custard nestled in a buttery, salt-kissed graham cracker shell, this pie strikes the perfect balance between citrus zing and creamy sweetness. Authentic Key lime juice provides a unique, floral acidity that elevates this dessert far beyond a standard lime tart.
🥗 Ingredients
The Crust
- 1 1/2 cups Graham cracker crumbs (finely pulsed)
- 1/3 cup Granulated sugar
- 6 tablespoons Unsalted butter (melted)
- 1/4 teaspoon Kosher salt
The Filling
- 4 large Egg yolks (at room temperature)
- 28 ounces Sweetened condensed milk (two 14-oz cans)
- 1 cup Key lime juice (freshly squeezed or high-quality bottled)
- 2 teaspoons Key lime zest (finely grated)
- 1/2 teaspoon Pure vanilla extract
The Topping & Garnish
- 1 cup Heavy whipping cream (very cold)
- 3 tablespoons Confectioners' sugar (sifted)
- 1 piece Key lime slices (thinly sliced for decoration)
- 4-5 pieces Fresh mint leaves (optional garnish)
👨🍳 Instructions
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1
Preheat your oven to 350°F (175°C). Position a rack in the center of the oven.
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2
In a medium mixing bowl, combine the graham cracker crumbs, sugar, and salt. Pour in the melted butter and stir with a fork until the mixture resembles wet sand.
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3
Press the crumb mixture firmly into the bottom and up the sides of a 9-inch pie plate. Use the bottom of a flat measuring cup to ensure the crust is even and tightly packed.
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4
Bake the crust for 8-10 minutes until it is fragrant and just slightly golden brown. Remove from the oven and let it cool completely on a wire rack.
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5
In a large bowl, whisk the egg yolks and Key lime zest together for about 2 minutes until the mixture is pale and slightly thickened.
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6
Gradually whisk in the sweetened condensed milk until smooth and fully incorporated with the yolks.
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7
Slowly pour in the Key lime juice and vanilla extract. Whisk gently until the mixture thickens slightly due to the reaction between the acid and the milk.
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8
Pour the filling into the cooled pie crust, smoothing the top with a spatula.
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9
Bake the pie at 350°F (175°C) for 15-18 minutes. The center should have a slight jiggle when shaken, but the edges should be set.
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10
Remove from the oven and allow to cool at room temperature for at least 1 hour. This prevents the crust from becoming soggy.
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11
Transfer the pie to the refrigerator and chill for at least 4 hours, or preferably overnight, to allow the custard to fully set.
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12
Just before serving, beat the cold heavy cream and confectioners' sugar in a chilled bowl until stiff peaks form.
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13
Pipe or dollop the whipped cream around the border of the pie. Garnish with lime slices and extra zest if desired.
💡 Chef's Tips
Always use fresh Key limes if available; they are smaller and more aromatic than Persian limes. Don't overbake the filling or it may crack; look for the 'slight jiggle' in the center. Chill your whisk and bowl before making the whipped cream for the best volume. If you can't find Key limes, a 50/50 mix of regular lime juice and lemon juice is a great substitute. For a cleaner slice, dip your knife in hot water and wipe it dry between every cut.
🍽️ Serving Suggestions
Serve with a chilled glass of Sauvignon Blanc or a light Dessert Wine. Pair with a scoop of coconut sorbet for an extra tropical flair. Enjoy as a refreshing finale to a seafood dinner featuring grilled shrimp or snapper. A hot cup of Earl Grey tea provides a lovely floral contrast to the tart lime. Serve on chilled plates to keep the custard firm while eating.