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    Home » Recipes » American

    Updated: Apr 23, 2023 by Marc · 9 Comments

    Key Lime Pie

    This easy Key Lime Pie from scratch has only 3 ingredients in the satiny smooth filling. Because the filling doesn't contain eggs, there's no need to bake it, giving it an awesome texture and retaining the taste of fresh limes.
    Recipe Pin

    This is the best Key Lime Pie, and the 3 ingredient filling doesn't need to be baked thanks to a neat trick.

    Growing up in California, Key Lime Pies were one of those unappealing slime green insta-desserts involving Cool Whip and Jello, that were so popular during the 80's. I never got the appeal, until I took a trip to the Florida Keys in the summer of 2009. It was there, at a nondescript shack along the Oversea Highway, that I had my first taste of a real Key Lime Pie. I was there for the fried conch, but the pie in the case is what drew my appetite and I was soon devouring my first slice of many delicious Key Lime Pies, as I ate my way around the Keys.

    I've tried making Key Lime Pie a number of times since then, but I've never been able to do that taste memory justice. Traditional Key Lime Pies are made with sweetened condensed milk, egg yolks, and lime juice, but because eating uncooked eggs is unwise, most recipes these days call for them to be baked in the oven. This not only renders the custard much firmer, the heat takes the fresh edge off of the lime juice.

    This Key Lime Pie is easy and delicious thanks to a neat trick the sets the filling without baking it.

    I wanted to come up with a Key Lime Pie that doesn't require the filling to be baked. The breakthrough moment came when I made a yuzu posset a few months ago. A posset is an eggless custard that's set through a chemical reaction between boiled cream and citrus juice. The first thought I had when I tasted it was that I'd found my solution for making a delicious Key Lime Pie that you don't need to worry about eating. The best part is that this method makes it ridiculously simple to make the pie. The filling consists of only 3 ingredients, and comes together in under 10 minutes.

    To ensure I got as much lime flavor into the filling as possible, I add both lime juice and lime zest, but I strain the zest out before filling the pie shell in order to keep the texture of the filling nice and smooth.

    Recipe for the best Key Lime Pie.

    With a buttery graham cracker crust and a cool silky filling that melts on contact with your tongue into a tangy pool of fresh lime flavor, this pie brought back delicious memories from my trip to the Keys. The rich milky sweetness from the cream mellows the harsh acidity of the limes, and the temperature sensitive filling sets firm in the fridge but melts like a ganache in your mouth, giving it an indescribably smooth texture.

    📖 Recipe

    Key Lime Pie

    4.28 from 11 votes
    Print Pin Discuss
    Prep Time 15 minutes mins
    Cook Time 15 minutes mins
    Total Time 2 hours hrs 30 minutes mins
    Yield 1 pie

    Units

    Ingredients 

    For Crust

    • 130 grams graham crackers
    • 3 tablespoons evaporated cane sugar
    • 70 grams cultured unsalted butter melted

    For Filling

    • 2 cups heavy cream 45% butterfat
    • 110 grams evaporated cane sugar about ½ cup
    • 4 grams lime zest zest of 1 lime
    • ⅓ cup lime juice see note below

    For Topping

    • 1 cup whipping cream 35% butterfat
    • 3 tablespoons powdered sugar
    • 1 teaspoon vanilla

    Instructions

    • Move your oven rack to the middle position and preheat to 325 degrees F (160 C).
    • Crumble the graham crackers into the bowl of a food processor and add 3 tablespoons of sugar. Pulse until they're fine crumbs (but not so long they turn into powder).
    • Add the melted butter and pulse until combined.
      Graham cracker crumbs for crust.
    • Dump the mixture into a pie plate and press the crumbs into an even layer along the bottom and up the sides of the pie plate. Using a heavy flat-bottomed object such as a glass helps ensure the bottom is packed tightly.
      Pressing graham cracker crumbs into pie dish for key lime pie.
    • Bake the crust in the preheated oven until fragrant (about 15 minutes). Remove from the oven and place on a cooling rack.
      Graham cracker crust for key lime pie.
    • Add the heavy cream and sugar to a pot and bring to a boil. Lower the heat and cook, stirring constantly for 5 minutes.
      Boiling cream for making key lime pie filling.
    • Turn off the heat and stir in the lime zest and lime juice. 
      An easy delicious Key Lime filling for key lime pie.
    • Let the mixture cool to room temperature, and then strain it into the pie crust through a sieve to remove the lime zest. Cover the key lime pie and refrigerate until the custard is fully set (2-3 hours).
      Filling the Key Lime Pie.
    • Whip the whipping cream until soft mounds form, Add the powdered sugar and vanilla. Continue whipping until the cream forms well defined peaks, but not until it's hard.
    • Add the cream a piping bag fitted with your favorite tip and pipe the cream onto the pie. You can also just mound the cream onto the pie.
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    Notes

    I know some of you are looking at the ingredients list and thinking that it's not a key lime pie if it doesn't include key limes, but I'd be willing to wager you couldn't tell the difference between a pie made with the juice and zest of regular limes vs key limes. If you're not convinced, feel free to substitute key lime juice and zest.

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      Recipe Rating




    1. Sheri says

      January 14, 2019 at 2:26 pm

      I’m considering making this pie. My expectations are about as high as they can be. My mom always talked about this lime pie she had once and she tried key lime pie anytime it was served anywhere we went. Sadly she never found the one she wanted so much. Anyway now that I’m older I’ve developed a taste for lemon and lime pies and I have found myself trying to figure out what she was looking for all that time. I like the idea of no eggs and how clever of you to add the zest to get that extra flavor, but then take it out so the texture isn’t compromised.. I’m probably in way too deep at this point. 😆 If you have any upgrades or improvements that aren’t shown in the recipe or even just tips for me I’d appreciate all the information I can get before I dive into the world of actually making pies.

      Reply
      • Marc Matsumoto says

        January 15, 2019 at 1:39 pm

        Hi Sheri, now I'm nervous😆 But I do feel pretty confident that this is the best Key Lime Pie I've tasted. I don't really have any revisions on this one right now, but please let me know how it goes!

        Reply
    2. Debi Sosalla says

      July 09, 2019 at 4:50 am

      Best key lime pie ever!! NEVER again using sweetened condensed milk!

      Reply
      • Marc Matsumoto says

        July 09, 2019 at 8:45 am

        Thanks Debi, I'm so glad to hear you enjoyed it!

        Reply
    3. Kathleen Forrest says

      September 11, 2019 at 6:14 am

      Can I make this 2 days before I serve it?

      Reply
      • Marc Matsumoto says

        September 11, 2019 at 9:22 am

        Hi Kathleen, as long as it's refrigerated it will not spoil, however it will not be at its best. The peak time would be after about a day. By the second day, the crust absorbs too much liquid from the filling and starts to get very wet (though some people like this).

        Reply
    4. Kathleen Forrest says

      September 12, 2019 at 12:25 am

      Just finished - really delicious! Worked out just great!

      Reply
    5. Joanna says

      January 30, 2022 at 11:49 pm

      I made this pie last night to have for dessert today but the filling still hasn’t set (it’s been about 16 hours now). Not sure what I did wrong. Is there any way to firm it up now? Maybe freeze it? I don’t want to ruin it

      Reply
      • Marc Matsumoto says

        January 30, 2022 at 11:57 pm

        Hi Joanna, I'm sorry to hear it didn't work out for you. Assuming you didn't make any ingredient substitutions, the most likely possibility is that the cream wasn't cooked for long enough. After coming to a rolling boil, you need to reduce the heat to keep it from boiling over, but you still want it at a medium boil. Freezing it is a good idea for salvaging it. Since there is no air incorporated into the cream it won't turn out soft like a no-churn ice cream, but you should still be able to slice it after leaving it at room temp for a bit.

        Reply

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    Start Here →

    Trending Recipes

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