Flourless Chocolate Cake with Coffee Mousse

Flourless Chocolate Cake with Coffee Mousse

Watch the video for this recipe:

This Flourless Chocolate Cake with Coffee Mousse is one of my favorite decadent cakes that I’ve been wanting to share with you for quite some time. The flourless chocolate cake at the base is rich, chocolaty, dense and fudgy while the coffee mousse on top is full of aroma, soft and airy.  Chocolate and coffee have always made such a great pair and in this form it is absolutely heavenly. This is by far a rich cake for chocolate lovers, who will start to love chocolate even more from now on. 


The recipe is easy to prepare and you don't need too many ingredients to make this unforgettable dessert. Even if this was not made on-purpose it is a gluten-free dessert, which makes it great even for those who have gluten intolerance. Try this recipe as soon as possible, it is a must for this year :)


Related Posts:
Flourless Chocolate Cake with Salted Caramel Mousse
Chocolate Cake
No-Bake White Chocolate Strawberry Mousse Cake



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  • Makes about 8-10 servings
  • Flourless Chocolate Cake
  • 1/2 cup (110g) butter
  • 5 oz (150g) semisweet chocolate
  • 3 eggs, separated
  • 1/2 cup (100g) sugar
  • 1 tbsp (8g) unsweetened cocoa powder
  • pinch of salt
  • Coffee Mousse
  • 2 egg yolks
  • 1/2 cup (100g) sugar
  • 1 1/2 tbsp (12g) cornstarch
  • 2/3 cup (160ml) warm milk
  • 1/2 tsp (3g) vanilla extract
  • 1 tbsp (4g) instant coffee
  • 1/2 tbsp (5g) gelatin powder
  • 2 tbsp cold water
  • 1 cup (240g) whipping cream, 35% fat, chilled
  1. Grease and line a 8-inch (20 cm) springform pan (with a removable base) with parchment paper. Separate egg yolks from whites. Preheat oven to 180°C (350°F).
  2. Melt chocolate and butter over a bain-marie until smooth. Let it cool slightly. Add  yolks one at a time and stir well.Stir in cocoa powder and salt. 
  3. Whip egg whites until foamy using a mixer. Gradually add sugar and whip until stiff peaks form.  Gently fold the whipped whites into chocolate mixture.
  4. Pour batter into prepared pan and bake for 25  minutes. Let it cool completely in the pan over a cooling rack.
  5. Prepare the coffee mousse. Stir egg yolks with sugar until creamy and pale yellow colored. Stir in cornstarch. Gradually whisk in the warm milk until completely combined.
  6. Place the yolks mixture into a small saucepan and cook over low heat while stirring until boils and thickens.
  7. Remove from heat and stir in vanilla extract and instant coffee. Let it cool.
  8. Dissolve gelatin in 2 tbsp cold water and let it swell for about 5 to 10 minutes. Place over low heat just until the gelatin dissolves and then pour it over coffee mixture.
  9. Whip the the cold whipping cream until stiff peaks form. Gradually incorporate into coffee mixture.
  10. Spread the coffee mousse over the chocolate cake in the pan, using an offset spatula.
  11. Cover and  refrigerate for about 4 hrs or overnight to set before serving.
  12. Run a warm knife around the edges of the cake to remove the sides of the pan.
  13. Dust the top of the cake with cocoa powder.
  14. Using a warm knife cut the cake into slices and serve.
Flourless Chocolate Cake with Coffee Mousse-1
Flourless Chocolate Cake with Coffee Mousse-2
Nutrition facts 1 Serving - 100g - Calories:306, Fat:18.8g, Saturated Fat: 10.8g, Unsaturated Fat:0.0g, Carbohydrates:32.3g, Sugar: 26.8g, Fiber: 0.7g, Protein: 4.1g, Cholesterol:135mg, Calories from Fat 169, Sodium 175mg, Potassium 55mg, Vitamin A 12%, Vitamin C 0%, Calcium 5%, Iron 4%, Nutrition Grade F, daily percent values are based on a 2000 calorie diet
On January 16, 2016 at 06:42 am, dumitru said...
Prajitura cu doua creme fara blat

trebuie sa o incerci.. nici pe departe doua creme fara blat

On January 17, 2016 at 02:04 am, SUE SCHUMACHER said...
I have a "page" on Facebook. I have several people who are gluten intolerant or have Celiac's. May I post your address on my page so my friends will be able to come here to check out your gluten free recipes?
On January 31, 2016 at 08:29 pm, Mina said...
Hi, im gonna make the chocolate cake with coffe mousse today. And I do want tl make that in a 30cm pan. It means that i have to double the recipe. But for how long should the cake be in the oven if im gonna double the recipe, and how much should the oven have the heat in celsius °C? Thanks.
On February 08, 2016 at 06:10 pm, Ben said...
You seem to have 2 too many egg yolks or confusing whites with yolks?? Could you update please.
On March 02, 2016 at 04:13 am, Andy said...
How many gelatin sheet I need to substitute the gelatin powder?
On March 13, 2016 at 09:03 am, emily said...
can I use dark chocolate instead of semisweet chocolate?
On March 20, 2016 at 02:15 pm, Shazaa said...
Dear Ella, Thank you so much for this wonderfully decadent recipe. I made this today and it came out perfect! Definitely a crowd pleaser!

I am so glad you liked it too:) one of the best in my opinion

On March 26, 2016 at 12:44 pm, Evelina Kulinich said...
When mixing the egg yolk, cornstarch, and milk mixture in the saucepan over low heat for the mousse, how long does that take for the mixture to become thick?
On April 04, 2016 at 02:47 pm, Khadeeja said...
Hello Ella can dark chocolate be used instead of semi sweet chocolate..??
On April 15, 2016 at 12:37 pm, Aditya said...
Hi Ella, Tried this recipe and it came out stunning!!! Thanks a lot for sharing this recipe and using simple ingredients and doable methods. Also, love the presentation of your videos, truly an art in itself.
On May 02, 2016 at 08:14 am, Sarah said...
Am facut prajitura asta de Paste si a iesit perfect! Nu e prea dulce, blatul dens si plin de ciocolata merge perfect in combinatie cu mousse-ul pufos. Nu sunt o fana a prajiturilor cu aroma de cafea pentru ca nu obisnuiesc sa beau, dar asta chiar mi-a placut. Cu siguranta o voi reface. Toata lumea a fost incantata! Multumim pentru reteta. :)

Ma bucur tare mult sa aud asta Sarah :) Scuze pt raspunsul cu intarziere.. sper ca o sa incerci si alte retete

On May 14, 2016 at 08:43 am, Khadeeja said...
Hello Ella would love to try this. Can milk chocolate be used instead of semi sweet chocolate

yes.. but you get better results with semisweet chocolate

On May 25, 2016 at 09:24 am, n said...
Dear ella, is there any replacement for cornstarch ?

yes.. use same amount of flour


yes.. use same amount of flour

On May 27, 2016 at 05:06 pm, Tram P. said...
Hi Ellen, First thank you for an easy and great recipe. However I have some problem making this cake. My cake didnt turn out as moist as yours but dry on the surface and deflated badly on a cooling rack. Also my mouse is not as thick as yours. Its kind of runny. I have attached the pics. Can you help me out? I did make sure to have all correct measurements. Am I over folding the battle? Oh I just figure out I can not add pics here.
On June 30, 2016 at 05:00 am, Khadeeja said...
Hello Ella want to try the coffee mousse but can I go with this instead of adding whipped cream or gelatine. Just gently folding in 2 cups of thick (not whipped) cream and then pouring the mousse in shot glasses. Would the taste differ or what.. please reply..??
On July 03, 2016 at 07:57 pm, Rica said...
Hello! My older sister has been begging me to make her a chocolate mousse cake, so i decided to try out this recipe. Can i substitute the instant coffee for cocoa powder to make a chocolate mousse instead? :)?
On July 14, 2016 at 07:47 pm, Sandra said...
Is it necessary to use gelatin powder?
On July 15, 2016 at 06:59 am, a said...
is it necessary to use gelatin powder?
On July 28, 2016 at 07:59 pm, kimberly said...
i just want thank you for creating this wonderful recipe! i made this for my sisters today and it was a hit. they even told me to make another one but i ran out of ingredients .will definitely add this to the family's favorite list. can't wait to try other recipe of yours.more power and more great recipes to come!!
On August 08, 2016 at 01:15 pm, Tabetha said...
Is this recipe gluten free?
On August 09, 2016 at 05:49 am, Gunay said...
This recipe is so amazing - flourless cake with coffee mousse! I made it yesterday, and it became very delicious! Thanks for the recipe!
On September 01, 2016 at 07:52 am, mehek said...
hi ella, is there a reason for not using baking powder? in most of my recipes I use it. plus my batter came a little liquidy...
On September 02, 2016 at 04:21 am, Helena said...
This cake is seriously SO amazing. For some reason every time I make it it deflates a bit in the middle when it comes out of the oven. But I just add the coffee mousse and it still looks amazing and tastes amazing. I made it for my class and it was gone within 30 minutes.
On September 15, 2016 at 02:55 pm, lorenza said...
mi piacerebbe ci fosse la trduzione in ITALIANO.
On February 13, 2017 at 10:04 pm, resh said...
Hi, I have made the flourless cake many times and is always a hit with friends & family. Taste amazing. but my cake base seems to be larger than the mousse layer. Also the cake batter is runny then yours. Any tips ? Which ever way it is delicious .......
On February 25, 2017 at 02:47 pm, Jessie said...
possibly the best desert i've ever made....wow.
On August 08, 2017 at 01:39 am, kishi said...
On November 24, 2017 at 01:00 am, Ruth said...
My gluten intolerant family adore it. Only problem is that my cake tins or 24 or 26cm. Could you tell me how to adjust quantities accordingly. When I try it comes out "hit and miss?" Can you help

Hello Ruth.

You can always use the rule of three , from math, to find the correct measurement.

On March 02, 2018 at 04:53 am, Ellie said...
Can I swap out the instant coffee with cocoa powder to make chocolate mousse?

Hi Ellie.

Yes, you can.

On March 26, 2018 at 08:27 am, hano said...
Can I replace instant coffee with esspresso ?

Hello Hano.

Yes, you can

On January 01, 2021 at 04:42 am, Alina said...
It was a WOW I impressed all my family gathering, I mean all. I 150% recommended it! Easy to make and so elegant and full of flavors. You made me look like a pro once again. Thank you ??

Yes:) this is one of the best cakes on my blog:) So glad you tried this out. 

On April 05, 2021 at 10:49 pm, Varu said...
This dessert was devine! All my guests raved about it! There are quite a few steps to make the coffee mousse and the flourless cake but its worth it in the end because it all came together so well. I used nescafe gold instant coffee granules and found that adding an extra tablespoon did the trick in bringing out the coffee flavour. Thank you for posting this recipe with an easy to follow video. This is the second dessert recipe i've tried from this page and I cant wait to try more.

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