Go Back
+ servings

Lemon Mousse Cake

Course: Cake, Dessert
Prep Time: 20 minutes
Cook Time: 15 minutes
Chilling Time: 4 hours
Total Time: 4 hours 35 minutes
Servings: 8 Slices
Calories: 154kcal
Author: Angela Coleby
A lemon mousse cake that is simple to make as well as being low carb and gluten free too.  
Print Recipe


Cake Sponge

  • cup coconut flour
  • 6 eggs separated
  • ½ cup erythritol or sugar substitute
  • ½ teaspoon baking powder
  • 1 teaspoon vanilla extract

Lemon Mousse

  • 3 Eggs
  • 2 lemons - juice & rind
  • ¼ cup erythritol or sugar substitute
  • 1 cup whipping/heavy cream
  • 1 packet gelatine or agar agar


To Make the Cake

  • Preheat the oven to 180C/350F degrees.
  • Grease and line two sponge tins (I used and 8 inch spring form tin twice)
  • Whisk the egg whites until stiff peaks form.
  • Beat the egg yolks with the erythritol.
  • Add the vanilla extract, baking powder and coconut flour. Whisk until combined.
  • Gently fold in the egg whites.
  • Pour into the cake tins and bake for 15 minutes until golden and firm.
  • Set aside to cool.

To Make the Mousse

  • Heat up the lemon juice, add the gelatine (or agar agar) and rind and stir until combined.
  • Beat the eggs with the erythritol. Add the lemon mixture and stir well.
  • Whip the cream into stiff peaks.
  • Fold the cream into the lemon mixture and stir well.

To Assemble the Cake

  • Place one sponge in the bottom of the spring form cake tin.
  • Pour the mousse on top and spread out evenly.
  • Place the other sponge on top of the mousse gently.
  • Put into the fridge for at least 4 hours, allowing the mousse to set.
  • Remove the cake from the spring form tin.
  • Slice, eat and enjoy!


The net carbs will be the total carb count minus the fibre count. Carb count excludes sugar alcohols.
Any nutritional analysis on the website is based on an estimate, calculated by http://nutritiondata.self.com from the individual ingredients in each recipe. Variations may occur for various reasons, including product availability and food preparation. We make no representation or warranty of the accuracy of this information.


Serving: 1sliceq | Calories: 154kcal | Carbohydrates: 6g | Protein: 8g | Fat: 88g | Fiber: 2g