Frozen Key Lime Pie

Updated May 8, 2026

Media 1 of 2
Total Time
15 minutes, plus 3 hours for freezing
Rating
5(4,382)
Comments
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This is the frozen key lime pie that ends up all over Jack Nicholson’s face in the film adaptation of the novel “Heartburn,” Nora Ephron’s thinly veiled recounting of her disastrous marriage to Carl Bernstein. A no-bake key lime pie recipe that's very easy to make, this formula uses a large amount of lime juice to guarantee a tart, impressive flavor. We recommend eating it, though, not using it as a weapon. The pie can be prepared ahead and frozen for up to a week before serving. Jennifer Steinhauer

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Ingredients

Yield:One 9-inch pie (8 servings)
  • 6 large egg yolks

  • 2 (14-ounce) cans sweetened condensed milk

  • 1 cup freshly squeezed or bottled Key lime juice

  • 1 tablespoon finely grated lime zest

  • 1 prepared 9-inch graham cracker crust, refrigerated

  • 2 to 3 cups lightly sweetened whipped cream, for topping

Ingredient Substitution Guide
Nutritional analysis per serving (8 servings)

74 grams carbs; 186 milligrams cholesterol; 530 calories; 9 grams monosaturated fat; 1 gram polyunsaturated fat; 10 grams saturated fat; 22 grams fat; 1 gram fiber; 242 milligrams sodium; 12 grams protein; 60 grams sugar

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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Preparation

  1. Step 1

    In a mixing bowl, beat yolks until thick, about 3 minutes. Add condensed milk, lime juice and lime zest. Beat again until well blended, about 1 minute.

  2. Step 2

    Pour into pie shell, filling it to the brim and mounding slightly on top. Cover with plastic wrap, stretching wrap tightly across surface. Freeze until firm, at least 3 hours.

    Image of a key lime pie covered with plastic before being frozen.
  3. Step 3

    Just before serving, remove from freezer and discard plastic wrap. Allow to rest for 5 minutes, then spread with whipped cream and serve.

    Image of whipped cream going on top of a frozen key lime pie.

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Ratings

5 out of 5
4,382 user ratings
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Comments

I tried this recipe three ways. Frozen, refrigerated and baked. Flavor is wonderful all ways, but texture is best if you bake it for 15 minutes at 350 degrees, cool and refrigerate. If you just refrigerate it, it is kind of soft and soupy. If you freeze it, it is just not quite the right texture either, icy, not custard-like, plus the frozen crust then sticks to the pan and it is hard to remove a nice slice neatly. I used regular limes. Makes two 8-inch pies.

Homemade graham cracker crusts: butterier, crunchier, fresher: use fresh graham crackers, roll 10 rectangles out in a ziploc bag with a rolling pin for texture, or blender/food processor for tinier tooth. (Brits can use 1.5 cups digestive biscuits) + 6 Tbs unsalted butter, 1/3 C sugar, smash it down with a cup/fingers in the pie pan, cook 300 degrees 10 min.
Also, a thin layer of sour cream on top of the cooled custard with a sprinkle of sugar -powdered best - before the whipped cream = dynamo.

The high acidity of the key lime juice thoroughly cooks the egg yolks so there is no need for heat. Not to worry, it is perfectly safe.

Won me a pie competition. Highly recommend using half ginger snaps and half digestives in the base. I also baked it for 12 minutes at 175C as recommended by others in the comments.

Zest makes this taste bitter. The pie also came out soggy. Disappointing recipe.

Sub 1 can of evaporated milk for less sugar; heat on stove to thicken first or it will make your crust soggy. Don't be shy with the lime zest - I used double. I was also generous with the whipped cream so there was a creamy balance to the tart and sweet filling.

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Credits

Adapted from “Heartburn,” by Nora Ephron

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