Key Lime Curd

Test Kitchen-Approved

Author Notes: This recipe is simply the Genius Recipes lemon cream using key lime juice in place of the lemon juice. It pairs particularly well with a slice of toasted coconut quick bread. Alexandra Stafford

Makes: 2 cups


  • 1/2 cup plus 2 tablespoons Key lime juice
  • 3 eggs
  • 1 egg yolk
  • 3/4 cup sugar
  • pinches salt
  • 1/2 to 1 cups butter
In This Recipe


  1. Pour water to a depth of about 2 inches into a saucepan, place over medium heat, and bring to a simmer.
  2. Combine the lime juice, whole eggs, yolk, sugar, and salt in a stainless steel bowl that will rest securely in the rim of a saucepan over, not touching, the water. (Never let the egg yolks and sugar sit together for more than a moment without stirring; the sugar will cook the yolks and turn them granular.) Place the bowl over the saucepan and continue to whisk until the mixture becomes very thick and registers 180° F on a thermometer. This will take 10 to 12 minutes. If you don't have or trust your thermometer, don't worry. It should thicken to the point that your whisk leaves a trail through the curd.
  3. Remove the bowl from over the water and let cool to 140° F, stirring from time to time to release the heat.
  4. Meanwhile, cut butter into pieces that are 1 tablespoon each. When the lime mixture has cooled a bit, leave it in the bowl if using an immersion blender, or pour it into a countertop blender or food processor. With the blender running, add the butter 1 tablespoon at a time, blending after each addition until incorporated. Taste the curd after you have added 1/2 cup of the butter. If you like the taste, stop adding butter. If you think it needs more, continue adding butter by the tablespoon until it tastes right. (I've been using 1/2 cup butter total.) The curd should be pale yellow, opaque and quite thick.
  5. You can use it immediately, or pour it into a storage container with a tight-fitting lid and refrigerate for up to 5 days. To use after refrigeration, if necessary, gently heat in a stainless steel bowl set over simmering water until it has softened, whisking constantly.

More Great Recipes:
Condiment/Spread|Fruit|Lime Juice|Make Ahead|Spring|Winter|Breakfast

Reviews (6) Questions (0)

6 Reviews

Kat May 29, 2017
Could you use this curd as a filling for pie?
Author Comment
Alexandra S. May 29, 2017
Yes, absolutely!
Jassy May 3, 2016
Could you recommend a general number of key limes you might need for that much juice? I know it varies but just to get in the ballpark.
Author Comment
Alexandra S. May 3, 2016
Jassy, it was so long ago that I can't remember precisely. It was a lot, as I recall, but I also was juicing an entire flat-rate box worth, which a friend had sent me, and I think I got over 2 cups of juice. I would estimate 15 to 20 . Hope that helps!
Melanie May 11, 2015
I don't use an immersion blender, just a wire whisk. Quickly stir in each tablespoon of butter until desired consistency and taste. Same results and much less fuss. Yummy.
Author Comment
Alexandra S. May 13, 2015
one less (big) utensil to clean! I like it.