A raspberry mousse cake that is surrounded by a light ginger sponge cake. A light yet filling dessert that is low carb and gluten free.
The ginger sponge for this raspberry mousse cake is very light yet firm enough to hold the raspberry mousse filling. Initially I thought about a chocolate sponge since chocolate and raspberries fuse beautifully. However, I wanted something a bit different and went for a ginger sponge as ginger and raspberry are a great combination that is never featured enough.
You need to allow the raspberry mousse to set for a few hours so this raspberry mousse cake is best made first thing in the morning if you want to tuck into it later that day. Allow at least 4 hours for it to set so it’s not a mess as you cut into a slice.
If you wanted a stronger ginger taste you could add some fresh grated ginger to the sponge. I just used ground ginger spice as I wanted a warm hint of ginger. Plus the Chief Taster would have not eaten as much as I could not have managed the whole cake, even over a few days.
You will need a spring-form cake tin to make this raspberry mouse cake recipe as sliding this out of another tin would be a bit messy and need a very steady pair of hands. There’s always the moment when you release the spring clasp that you fear the cake collapsing. So far, so good. Now I’m thinking about other flavour for a mousse cake!
More low carb desserts
Mixed Berry Cream Cheese Mousse
Raspberry Mousse Cake
Ingredients
Sponge
- ⅓ cup coconut flour
- 6 medium eggs separated
- ½ cup erythritol or sugar substitute
- ½ teaspoon baking powder
- 1 teaspoon vanilla extract
- 1 tablespoon ground ginger
Raspberry Mousse
- 3 medium eggs
- 1 cup cream heavy/whipping
- 12 oz raspberries
- 1 pack gelatin
- ¼ cup water
- ¼ cup erythritol
Instructions
To make the cake:
- Preheat the oven to 180C/350F degrees.
- Grease and line two sponge tins (I used an 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, ginger 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 water, add the gelatin (or agar agar) and stir until combined.
- Blend the raspberries until smooth and add to the gelatin mixture.
- Beat the eggs with the erythritol. Add the raspberry mixture and stir well.
- Whip the cream into stiff peaks.
- Fold the cream into the raspberry 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!
Notes
Nutrition
The information shown is an estimate provided by an online nutrition calculator.
This post may contain affiliate links. Please read my disclosure policy for more information.
Sjanette
How much gram is 1 packet gelatin?
Angela Coleby
About 7g.
April
How much sugar substitute goes in the mousse? It’s not listed in the ingredients for it.
Angela Coleby
ooh! Good spot! It should be 1/4 cup but perhaps taste test as my tooth is not as sweet as others!
Trish
I’m interested in making this but have 2 questions.
If I wanted to make the sponges chocolate instead of ginger would I just replace the tbsp of ginger with maybe 2 tbsp of cocoa powder? Do you think that would work?
The other question is on the mousse. Am I right that it’s essentially raw eggs that you’re eating? I don’t really mind but that’s odd in a recipe....
Angela Coleby
Yes, cocoa powder would be delicious. Mousse is often made with raw eggs, the same as mayonnaise, egg nog, ice cream and tiramisu is. Raw eggs are safer to eat than thought, as long as sensible guidelines are followed.
Sara H.
That looks fantastic!! Question: if I wanted to use part sugar-say, a 1/4 of a cup, would I use another 1/4 of a cup erythritol? Or would that just make it too sweet? I like the idea of using the erythritol to cut back on the sugar but not take it out completely. Really looks scrumptious!!
Angela Coleby
Thanks Sara. I don't think that splitting it that way would make it too sweet. Hope you enjoy it!