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5 Ingredient Keto Lemon Mousse

4.7 stars, average of 54 ratings

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These fluffy Keto Lemon Mousse jars are the perfect low-carb treat. So refreshing, yet so creamy. Velvety smooth and whizzed up in a matter of minutes.

Great for if you have friends over and need a crowd pleasing low-carb dessert with minimal fuss but maximum taste, or simply want a quick well earned treat to snuggle down to Netflix with.

Here's a tip if you love orange. Simply replace the lemon juice and zest with orange juice and zest, and optionally add a pinch of cinnamon!

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5 Ingredient Keto Lemon MoussePin itFollow us 148.4k

Hands-on Overall

Serving size 1 jar

Allergy information for 5 Ingredient Keto Lemon Mousse

✔  Gluten free
✔  Egg free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Shellfish free
✔  Beef free

Nutritional values (per serving, 1 jar)

Net carbs3 grams
Protein2.9 grams
Fat25.5 grams
Calories256 kcal
Calories from carbs 5%, protein 5%, fat 90%
Total carbs3.1 gramsFiber0.1 gramsSugars2.4 gramsSaturated fat17.2 gramsSodium22 mg(1% RDA)Magnesium3 mg(1% RDA)Potassium39 mg(2% EMR)

Ingredients (makes 4 servings)

  • 1/2 cup whipping cream or coconut cream (120 ml/ 4 fl oz)
  • 2/3 cup mascarpone cream or cream cheese (160 g/ 5.6 oz)
  • 1/4 cup powdered Erythritol or Allulose (40 g/ 1.4 oz)
  • 1/4 cup lemon juice (60 ml/ 2 fl oz)
  • 1 tsp lemon zest


  1. Place all the ingredients in a mixing bowl: cream, mascarpone (or cream cheese), powdered sweetener (Erythritol-based or Allulose), lemon juice and lemon zest. 5 Ingredient Keto Lemon Mousse
  2. Mix with an electric whisk until thick and smooth. 5 Ingredient Keto Lemon Mousse
  3. Spoon into jars or glasses and refrigerate for 1 hour before serving. 5 Ingredient Keto Lemon Mousse
  4. Optionally, top with more lemon zest and/or some whipped cream.
    5 Ingredient Keto Lemon Mousse
  5. Store in the fridge, covered, for up to 5 days.
    5 Ingredient Keto Lemon Mousse

Ingredient nutritional breakdown (per serving, 1 jar)

Net carbsProteinFatCalories
Cream, heavy whipping, pouring, full-fat (30-40% fat)
0.8 g0.6 g11.4 g110 kcal
Mascarpone cheese
0.7 g2.3 g14.1 g140 kcal
Erythritol (natural low-carb sweetener)
0.5 g0 g0 g2 kcal
Lemon juice, fresh
1 g0.1 g0 g3 kcal
Lemon zest (peel), fresh
0 g0 g0 g0 kcal
Total per serving, 1 jar
3 g2.9 g25.5 g256 kcal

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Jo Harding
Creator of

Jo Harding

Food is one of life’s most powerful medicines. I’m a true testament that once you find the right approach for you, you can overcome poor health through the healing power of food.

I believe the secret to radiant health starts and ends with a healthy gut so my recipes are all grain, gluten and refined sugar free. Most are also dairy-free.

Let us know what you think, rate this recipe!

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Comments (1)

Wow….very quick and easy, and very delicious!