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HomeDietary NeedsKeto

Perfect Keto Lemon Curd (4 Ingredients)

Sam Guarnieri
Sam Guarnieri Posted: 04/21/22 Updated: 01/17/25
5
/5
8 Comments
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GF Gluten Free V Vegetarian K Keto LC Low Carb
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Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.
Pin graphic for keto lemon curd.

Bright, tangy keto lemon curd is a deliciously citrus sweet treat that’s totally added-sugar-free! 4 ingredients is all you need for a delightful 1g-net-carb lemon curd that’s perfect on its own and even better with your favorite keto baked goods.

3/4-angle view of a small glass of keto lemon curd, with a silver spoon lifting lemon curd out of the glass.

What We Love About This Recipe

  1. Lemon curd is a delightful spread that’s perfect on a variety of baked goods. Toast, pound cake, muffins, pie crust… This keto version is no different!
  2. I know what you’re thinking. “Cheryl, this is KETO. Those baked things you just mentioned are full of CARBS and SUGAR and GRAINS and GLUTEN.” Yes, yes, that’s completely true, but! Recreating some of those classic treats in a keto way really couldn’t be easier – and you generally can’t even tell they’re keto. I hear you, though. And you can totally forgo the baked goods entirely and enjoy this keto lemon curd on its own or with a dollop of whipped cream, a couple of fresh berries, and crunchy keto granola for a citrusy keto parfait.
  3. This recipe gives you a perfect keto curd with a thick, gooey texture and a tangy-but-sweet citrus flavor. It’s sort of like a custard, but with more intensity (in a good way!). You only need 4 ingredients to create it, too!

Chef’s Tips

  • Swerve and erythritol can sometimes be gritty even after heating them. If you’re at all concerned about the texture, use a powdered version instead of a granular version. You could also use allulose instead – it tends to melt better.
  • I really recommend you use the lemon zest! It’s an optional ingredient but it adds SO MUCH flavor and brightness to the lemon curd. Plus, you really need to use fresh lemon juice here, so you’ll already have the lemons! Zesting them takes no time at all.
  • This recipe only uses egg yolks, which means you’ll have a handful of egg whites leftover. Don’t throw them out!! There are so many ways you can use egg whites for more than just scrambled eggs or egg white omelettes.
Overhead view of a glass of keto lemon curd with a spoon.

Check Out These Keto Treats

  • Keto Peach Cobbler
  • Easy Keto French Toast Sticks
  • Keto Bread Pudding
  • Gooey Keto Lemon Bars
  • Keto Whipped Cream
  • Keto Creme Brûlée

If you loved this recipe as much as we did, don’t forget to leave us a review below. ★ Follow Easy Healthy Recipes on Pinterest, Facebook, and Instagram, too!

 

For more delicious recipes, visit our sister sites, 40 Aprons and Easy Cheap Recipes.

Close-up, overhead view of a glass jar of keto lemon curd with a silver spoon.
5 from 1 vote

Creamy Keto Lemon Curd

Prep: 10 minutes minutes
Cook: 15 minutes minutes
Chill: 2 hours hours
Total: 2 hours hours 25 minutes minutes
Bright, citrusy, and perfectly sweet without any sugar. Keto lemon curd is a rich and tangy sweet treat that's great on it's own or with your favorite keto pound cake.
Print Save Saved!
4 servings

Ingredients

  • water
  • 4 large egg yolks at room temperature
  • ½ cup Granular Swerve Sweetener or other keto sweetener
  • ⅓ cup freshly squeezed lemon juice
  • 1 tablespoon fresh lemon zest optional
  • 5 tablespoons butter divided
Get Recipe Ingredients

Equipment

  • medium saucepan
  • large heat-safe glass bowl, should just sit in saucepan like a double-boiler
  • whisk
  • refrigerator-safe jar or bowl
  • Plastic Wrap

Instructions 

  • Fill medium saucepan with 2 to 3 inches water. Place over high heat and bring water to boil, then reduce heat to low. Place large heat-safe bowl on top of saucepan to create double-boiler. Note: top of water should not touch bowl. Be sure to leave space between.
    Medium saucepan with large glass bowl sitting on top.
  • Add egg yolks, Swerve, lemon juice, and lemon zest (if using) to bowl. Vigorously whisk without stopping until mixture has thickened, approximately 8 to 10 minutes.
    Overhead view of ingredients for keto lemon curd in a large glass bowl.
  • Carefully remove bowl from heat. Add 1 tablespoon butter to mixture and whisk thoroughly until butter has completely melted. Repeat with remaining 4 tablespoons butter, adding in 1 tablespoon increments and melting completely before adding next tablespoon.
    Overhead view of ingredients for keto lemon curd in a large glass bowl with a whisk.
  • When all butter is fully incorporated, carefully transfer lemon curd mixture to jar or bowl. Cover with plastic wrap, gently pressing plastic wrap against top of lemon curd.
    Overhead view of keto lemon curd in a glass jar covered with plastic wrap.
  • Place covered lemon curd in refrigerator and chill at least 2 hours or until completely cooled. Serve chilled.

Notes

  • If your heat is too high, the curd will burn.
  • Lemon Juice: You’ll notice a difference in texture and flavor if you use bottled lemon juice and not fresh. For the best lemon curd, use fresh lemon juice!
  • Sweeteners: The amount of sweetener you need will vary depending on the type you use. If you’re using allulose instead of Swerve, you may need more; with monk fruit or stevia you may need less.
  • Leftovers: Refrigerate in an airtight container up to 1 week.

Nutrition Information

Serving: 1serving | Calories: 185kcal | Protein: 3g | Fat: 19g | Saturated Fat: 11g | Trans Fat: 1g | Total Carbs: 26g | Fiber: 1g | Sugar: 1g | Erythritol: 24g | Net Carbs: 1g | Vitamin C: 10mg | Cholesterol: 221mg | Sodium: 121mg | Potassium: 46mg | Calcium: 29mg | Iron: 1mg

Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.

 

Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.

 

To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

© Author: Sam Guarnieri

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Sam Guarnieri

Meet Sam Guarnieri

Sam is a travel, food, and fitness enthusiast from the New York metro area who loves creating new and inventive recipes. Her love of food goes all the way back to her early childhood, cooking alongside her mom and Nonna – the two best cooks she knows! She's a big believer that good-for-you food can still explode with flavor and (most importantly) be easy to make. When she's not in the kitchen, Sam can usually be found planning her next vacation, spending time outdoors, or bingeing the latest Netflix docu-series.

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  1. AvatarJean Chance says

    Posted on 9/22/23 at 7:26 am

    Help! I made this but my sweetener was still crystally. I used Lakanto monk fruit. I was a little afraid to cook it too long maybe?

    Reply
    • Jessica | Easy Healthy Recipes TeamJessica | Easy Healthy Recipes Team says

      Posted on 9/28/23 at 4:24 pm

      Oh no, I’m so sorry to hear this! Some sweeteners can be grainy when heated- you could either use a little bit less monk fruit sweetener next time, or try powdered sweetener. Hope this helps!

      Reply
  2. AvatarTina says

    Posted on 5/15/23 at 11:47 am

    A bit confused about nutritional info…you have it as one serving but 26g for Carbs? or is the nutritional info based on the whole batch?

    Reply
    • Megan | Easy Healthy Recipes TeamMegan | Easy Healthy Recipes Team says

      Posted on 5/26/23 at 2:26 pm

      No, that’s the information for 1 serving out of 4. You don’t count the carbs from the Swerve, so there’s 1g net carb per serving.

      Reply
  3. AvatarCarol says

    Posted on 4/8/23 at 4:36 pm

    5 stars
    I used honey as sweetener (1/3 c).
    Delicious!! Fun to make. Thank you!!

    Reply
    • Megan | Easy Healthy Recipes TeamMegan | Easy Healthy Recipes Team says

      Posted on 4/11/23 at 11:23 am

      Thanks so much for your kind review, Carol! So happy you enjoyed it!

      Reply
  4. AvatarAngelina says

    Posted on 1/26/23 at 12:06 pm

    Is it common for it to be a pale yellow before it turns into that gorgeous bright yellow?

    Reply
    • AvatarMolly | 40 Aprons Team says

      Posted on 1/26/23 at 3:14 pm

      Hi Angelina, it will definitely become a brighter yellow after heating!

      Reply

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A white woman with long brunette hair stands in a light grey kitchen drinking a green smoothie and wearing a seafoam apron.

meet cheryl

Foodie turned food blogger, I've been developing and sharing my flavor-packed, approachable recipes for more than a decade now! In addition to blogging, I'm also a certified health coach, serial entrepreneur, and busy mom of 3. I believe food should be delicious, nutritious meals don't need to be complicated, anyone can cook, and fed is best no matter your age.

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