Lime pie is a creamy, tart dessert with a crisp graham cracker crust and a bright citrus filling. This version uses fresh lime juice, sweetened condensed milk, and egg yolks, then chills until sliceable; it balances tangy flavor with a smooth, rich texture.
Ingredients
- 1 ½ cups (150 g) finely crushed graham cracker crumbs
- ¼ cup (50 g) granulated sugar, divided
- 5 tablespoons (70 g) unsalted butter, melted
- 4 large egg yolks
- 1 can (14 ounces / 396 g) sweetened condensed milk
- ½ cup (120 ml) fresh lime juice, preferably from Key limes or Persian limes
- 1 tablespoon finely grated lime zest, from about 2 limes
- ½ cup (120 ml) cold heavy cream
- 1 tablespoon (8 g) confectioners’ sugar
- Pinch of fine salt
Instructions
- Heat the oven and prepare the pan. Set a rack in the middle of the oven and heat it to 350°F (175°C). Have a 9-inch (23 cm) pie plate ready.
- Make the crust. Stir the graham cracker crumbs, 2 tablespoons (25 g) of the granulated sugar, melted butter, and salt together until the crumbs are evenly moistened. Press the mixture firmly over the bottom and up the sides of the pie plate. Use the flat bottom of a measuring cup to compact it, especially where the base meets the sides.
- Prebake the crust. Bake for 8 minutes, then set the pie plate on a heat-safe surface while you mix the filling. Keep the oven on. The crust should look lightly set, not deeply browned.
- Mix the filling. Whisk the egg yolks and the remaining 2 tablespoons (25 g) granulated sugar in a medium bowl until smooth and slightly lighter in color, about 1 minute. Whisk in the condensed milk, lime juice, and lime zest until fully combined. Pour the filling into the warm crust and smooth the top.
- Bake until set. Bake for 10 minutes. The outer part of the filling should look set, while the center may still wobble gently when the pie is nudged. For egg safety, the filling must reach 160°F (71°C); the USDA FSIS safe minimum for egg dishes is 160°F (71°C), so check the center with a food thermometer if you are unsure. Avoid overbaking, which can make the filling grainy or cause it to crack.
- Cool and chill. Let the pie cool on a rack for about 45 minutes, then cover it loosely and refrigerate for at least 4 hours, until cold and firm. Keep it refrigerated during this setting time rather than leaving it out for an extended period.
- Add the topping and serve. Just before serving, beat the cold heavy cream with the confectioners’ sugar until soft peaks form. Spoon or pipe it over the pie. Cut with a sharp knife, wiping the blade between slices for neat portions.
Tips
- Choose the lime that is convenient. Key limes are small and aromatic, but Persian limes work well and are easier to juice. Bottled Key lime juice is a practical alternative when fresh fruit is unavailable; use the same volume, but expect a slightly less fragrant result.
- Measure juice, not just fruit. Limes vary in size and juiciness, so squeeze enough to reach ½ cup (120 ml). Add zest only from clean, unwaxed fruit, and grate just the colored outer layer to avoid bitter white pith.
- Press the crust firmly. Loose crumbs can crumble when sliced. Pack the mixture evenly into the plate, but do not make the crust excessively thick at the rim, where it may bake faster than the base.
- Give the filling time to set. The pie can seem soft while warm. Chill it for at least 4 hours before cutting; adding the whipped cream earlier can make the topping slump and the pie harder to portion.
Serving Suggestions
Serve the pie cold, with a modest swirl of whipped cream and a little extra lime zest. Thin lime wheels or a few curls of zest make a simple garnish, but add them shortly before serving so they stay fresh. The pie is rich and tart, so small slices work well after a barbecue, a seafood meal, or a casual dinner. For easy serving, use a warm, dry knife and wipe it between cuts.
Variations
Use a different crumb crust: Replace the graham crackers with an equal amount of finely crushed digestive biscuits or vanilla wafers. Digestive biscuits give a less sweet, slightly more buttery base; vanilla wafers make it sweeter.
Make it extra tart: Increase the lime zest to 1 ½ tablespoons (about 12 g), but keep the juice amount unchanged so the filling sets as intended. For a more pronounced lime aroma, rub the zest into the sugar before mixing.
Skip the whipped topping: Serve plain, or use a small spoonful of crème fraîche for a gently tangy contrast. For a dairy-free alternative, use a plant-based whipping cream suitable for whipping; texture and flavor vary by product.
Try a meringue finish: A meringue topping changes the finishing method and requires its own safe preparation. Use pasteurized egg whites, or cook the meringue mixture to 160°F (71°C) with a thermometer before whipping; do not assume a quick torching of the outside heats the center safely.
Storage and Reheating
Refrigerate the pie within 2 hours of baking or serving, covered once fully cool. It keeps for up to 3 days in the refrigerator; whipped cream is best within 1 to 2 days, so add it close to serving if making the pie ahead. Do not leave the pie at room temperature for more than 2 hours, or more than 1 hour if the temperature is above 90°F (32°C). To freeze, wrap un-topped pie tightly and freeze for up to 1 month; thaw overnight in the refrigerator and add fresh whipped cream. This dessert is served cold, so reheating is not recommended.
Frequently Asked Questions
Can I use bottled lime juice?
Yes. Use ½ cup (120 ml) bottled lime juice in place of fresh juice. Fresh juice and zest usually give a brighter aroma, so bottled juice may taste a little less lively; add fresh zest if you have it.
Do I have to use Key limes?
No. Key limes have a distinctive floral, sharp flavor, but regular Persian limes are a reliable substitute and are widely available. The pie will still set and taste like a lime pie.
Why is my lime pie filling runny?
Common causes are too little baking, inaccurate ingredient amounts, or insufficient chilling. Bake until the filling’s center reaches 160°F (71°C), then chill at least 4 hours. It firms further as it cools.
Can I make the pie a day ahead?
Yes. Bake and chill it up to a day ahead, keep it covered in the refrigerator, and add the whipped cream just before serving for the best texture.
Can I make lime pie without eggs?
This recipe depends on egg yolks for its traditional baked custard texture, so simply omitting them will not work. Choose a specifically developed egg-free lime pie recipe, which may use a different thickener and require different cooking and chilling times.
How can I tell when the pie is done?
The edges should look set and the center should have a slight, even wobble rather than look liquid. Because this filling contains eggs, use a thermometer to confirm the center reaches 160°F (71°C); the pie will become firmer as it chills.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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