Keto Lemon Curd

This Keto Lemon Curd is a bright, tangy, and creamy spread that brings bold citrus flavor to your low-carb lifestyle. Made with just five simple ingredients, this curd is sugar-free, ultra-smooth, and takes only 10 minutes to make. With just 2 grams of carbs per serving, it’s perfect for topping keto pancakes, filling desserts, or enjoying by the spoonful.

Why You’ll Love This Recipe

• Low carb and keto-friendly: Just 2g total carbs (1g net carbs) per serving.

• Fast and easy: Ready in about 10 minutes from start to finish.

• Bright, tangy flavor: Fresh lemon juice gives it a bold citrus kick.

• No refined sugar: Sweetened with allulose or your favorite keto-friendly sweetener.

• Thick and silky texture: Smooth enough to spread or spoon over desserts.

• Versatile: Use as a topping, filling, or mix-in for all kinds of keto treats.

• Small batch: Makes just the right amount for several uses without waste.

• Freezer-friendly: Great for making ahead and storing for later.

• Simple ingredients: Made with everyday kitchen staples.

• Guilt-free indulgence: Tastes like a treat, fits your macros.

Ingredients

(Tip: You'll find the full list of ingredients and measurements in the recipe card below.)

• 2 large eggs

• 2 large egg yolks

• ¾ cup granulated keto sweetener (like allulose)

• ⅓ cup unsalted butter

• Juice of 2 large lemons (about ½ cup)

Directions

1. Whisk eggs and sweetener
   In a small saucepan (preferably nonstick or stainless steel), whisk together the eggs, egg yolks, and sweetener until well combined.

2. Cook over low heat
   Place the saucepan over low heat. Add the butter and lemon juice.

3. Whisk until thickened
   Stir constantly over low heat for about 8–10 minutes, or until the curd thickens to a smooth, pudding-like consistency. Do not let it boil.

4. Strain and cool
   Remove from heat. Strain the curd through a fine-mesh sieve into a mixing bowl to remove any curdled bits or zest.

5. Chill
   Allow the lemon curd to cool to room temperature. Then transfer to an airtight jar or container. Refrigerate for at least 2 hours before serving to allow it to set.

Servings and timing

Servings: 12 (about 1–2 tablespoons per serving)
Prep Time: 1 minute
Cook Time: 10 minutes
Total Time: 11 minutes

Variations

• Add zest: For even more lemon flavor, add 1–2 teaspoons of finely grated lemon zest before straining.

• Lime or orange curd: Substitute lemon juice with lime or orange juice (adjust sweetener to taste).

• Extra rich: Stir in a tablespoon of cream cheese or mascarpone after cooking for added richness.

• Vegan version: Try using a keto egg substitute and coconut oil (results may vary).

• Flavored twist: Infuse with vanilla, lavender, or ginger for a creative twist.

Storage/Reheating

Storage: Store lemon curd in an airtight container in the refrigerator for up to 2 weeks.

Freezing: Transfer to a freezer-safe jar or container and freeze for up to 6 months. Thaw overnight in the fridge.

Reheating: Lemon curd doesn’t need to be reheated—serve chilled or bring to room temperature. If using in a warm dish, stir gently to re-soften.

FAQs

Can I use erythritol or monk fruit instead of allulose?

Yes, but allulose yields the smoothest, least grainy texture. If using erythritol, allow it time to dissolve thoroughly during cooking.

Why did my curd curdle?

It likely got too hot or wasn’t whisked constantly. Keep the heat low and stir continuously to prevent the eggs from scrambling.

Do I need to use a double boiler?

No, direct low heat and constant whisking are sufficient, but a double boiler can provide more control if you're concerned about overheating.

How do I know when it's thick enough?

The curd should coat the back of a spoon and leave a trail when you drag your finger through it. It will thicken further as it chills.

Can I skip straining the curd?

Straining is optional, but it ensures a perfectly smooth, lump-free texture—especially if there’s any cooked egg.

Is lemon curd keto?

This version is! Traditional lemon curd contains sugar, but this recipe uses keto-friendly sweeteners and has only 1g net carb per serving.

Can I use bottled lemon juice?

Fresh lemon juice is recommended for the best flavor, but bottled juice can work in a pinch if it's 100% lemon juice.

Can I double the recipe?

Yes, simply double all ingredients. Use a larger saucepan and cook slightly longer, watching for thickening.

What can I use keto lemon curd for?

Spread it on keto pancakes, waffles, muffins, or toast. Use it as a filling for fat bombs, cupcakes, or cheesecake. Or eat it with a spoon!

Can I add thickener like xanthan gum?

It's not necessary—the eggs and butter thicken the curd naturally. Over-thickening can result in a jelly-like texture.

Conclusion

This Keto Lemon Curd is a tangy, creamy, and low-carb treat that brings a burst of citrus flavor to your keto lifestyle. Whether you're spreading it on a scone, swirling it into cheesecake, or eating it straight from the jar, it’s a fast and foolproof way to brighten up your day—without the carbs. Make a batch today and enjoy the sweet taste of sunshine in every spoonful.

Print