Key Lime Pie Recipe
brown butter crumble - candied lime - vanilla chantilly
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Ingredients
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Crust — Brown Butter Graham Crumble
Filling — Classic Key Lime Custard
Candied Lime Slices
Vanilla Chantilly
Finish & Garnish
Method
Crust — Brown Butter Graham Crumble
- 1
Brown the butter
Melt the 6 tbsp salted butter in a light-colored saucepan over medium heat. Swirl frequently; after foaming subsides watch closely as the milk solids brown and the butter smells nutty, about 5–6 minutes. Remove from heat immediately and transfer to a small bowl to stop cooking.
- 2
Combine crumbs
In a mixing bowl, combine 1 1/2 cups graham cracker crumbs, 3 tbsp granulated sugar, 1/4 cup finely chopped toasted pecans (if using), and 1/4 tsp fine salt. Pour the warm brown butter over the crumbs and stir with a fork until evenly moistened and the mixture holds together when pressed. Reserve 1/4 cup of this crumble for finishing and set aside.
- 3
Press into pan
Press the remaining crumble firmly into the bottom and slightly up the sides of a 9-inch pie dish (or 9-inch tart pan) to form an even crust. Use the bottom of a measuring cup to compact. Chill in the refrigerator for 15 minutes to set while you prepare the filling.
- 4
Bake (optional for crisper crust)
Optional: Preheat the oven to 350°F (175°C) and bake the crust for 8–10 minutes until fragrant and set. Let cool slightly before filling. If you prefer a chewier crust, skip baking and proceed chilled.
Filling — Classic Key Lime Custard
- 5
Preheat oven
If you baked the crust, keep the oven at 350°F (175°C). If the crust was not baked, preheat oven to 325°F (160°C) for gentler baking of the custard.
- 6
Whisk filling
In a medium bowl, whisk together 14 oz sweetened condensed milk and 4 large egg yolks until smooth and slightly thickened. Whisk in 3/4 cup fresh key lime juice, 1 tbsp key lime zest, 1/2 cup heavy cream, and 1/2 tsp vanilla extract until fully incorporated and glossy. Strain the mixture through a fine mesh sieve into a pourable container to remove any coagulated egg bits and excess zest for a silky texture.
- 7
Bake filling
Pour the strained filling into the chilled/baked crust. Place the pie on a sheet pan and bake until the center is just set but still slightly jiggly (center temperature ~150°F / 65°C), about 15–22 minutes depending on oven and pan. If using the higher temperature, check at 15 minutes. Avoid overbaking to keep the filling creamy.
- 8
Cool and chill
Remove pie from oven and let cool to room temperature on a wire rack for 30–45 minutes, then refrigerate uncovered for at least 4 hours (preferably overnight) to fully set and develop flavor.
Candied Lime Slices
- 9
Prepare limes
Thinly slice 3 key limes into 1/8-inch rounds; remove any seeds. Blanch the slices in boiling water for 30 seconds then drain to reduce bitterness.
- 10
Candy the slices
In a small nonreactive skillet, combine 1/2 cup granulated sugar and 1/2 cup water and bring to a simmer. Add the lime slices in a single layer and simmer gently for 12–15 minutes until the rinds become translucent and the syrup thickens slightly. Turn slices occasionally to candied evenly.
- 11
Dry and store
Using a slotted spatula, transfer candied slices to a wire rack set over parchment to cool and dry. Reserve 6 attractive slices for garnish. Any remaining syrup can be reduced briefly to a glaze and brushed lightly on finished slices.
Vanilla Chantilly
- 12
Whip cream
Chill a mixing bowl and whisk or paddle for 5 minutes in the freezer. Pour 1 cup cold heavy cream into the bowl. Add 2 tbsp powdered sugar and 1/2 tsp vanilla bean paste or extract. Whip on medium-high speed until soft peaks form — do not overwhip. Transfer chantilly to a piping bag fitted with a large round or star tip if desired.
Finish & Assembly
- 13
Assemble pie
Remove the chilled key lime pie from the refrigerator. Pipe or spoon dollops of vanilla chantilly around the edge or in the center as desired.
- 14
Garnish
Arrange 4–6 candied lime slices atop the chantilly. Sprinkle the reserved 1/4 cup brown butter crumble around the edges and over the chantilly for crunch. Optionally brush candied lime slices with a little reduced syrup for shine and add micro mint leaves or a few curls of fresh lime zest for color.
- 15
Serve
Slice with a hot, dry knife for clean cuts. Serve chilled. Leftover pie can be stored covered in the refrigerator for up to 3 days; chantilly is best used within 24 hours.