Flourless Chocolate Cake with Coffee Mousse

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 🙂

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Flourless Chocolate Cake with Coffee Mousse

Flourless Chocolate Cake with Coffee Mousse

5 from 4 votes
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.
Servings 10 servings
Prep Time 30 minutes
Cook Time 30 minutes
Total Time 1 hour


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 ½ 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


  • 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).
  • 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. 
  • 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.
  • Pour batter into prepared pan and bake for 25  minutes. Let it cool completely in the pan over a cooling rack.
  • 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.
  • Place the yolks mixture into a small saucepan and cook over low heat while stirring until boils and thickens.
  • Remove from heat and stir in vanilla extract and instant coffee. Let it cool.
  • 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.
  • Whip the the cold whipping cream until stiff peaks form. Gradually incorporate into coffee mixture.
  • Spread the coffee mousse over the chocolate cake in the pan, using an offset spatula.
  • Cover and  refrigerate for about 4 hrs or overnight to set before serving.
  • Run a warm knife around the edges of the cake to remove the sides of the pan.
  • Dust the top of the cake with cocoa powder.
  • Using a warm knife cut the cake into slices and serve.



Serving: 1gCalories: 306kcalCarbohydrates: 32.3gProtein: 4.1gFat: 18.8gSaturated Fat: 10.8gCholesterol: 135mgSugar: 26.8g
Calories: 306kcal
Course: Dessert
Cuisine: American
Keyword: chocolate cake with coffee mousse, coffee mousse, flourless chocolate cake, flourless chocolate cake with coffee mousse, gluten free chocolate cake, gluten free dessert

Did you make this recipe?

Please let me know how it turned out for you! Leave a comment below and tag @homecookingadventure on Instagram and hashtag it #homecookingadventure.

Join the Conversation

  1. dumitru Author says:

    Prajitura cu doua creme fara blat

    1. Ella-HomeCookingAdventure Author says:

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

  2. SUE SCHUMACHER Author says:

    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?

  3. Mina Author says:

    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.

  4. You seem to have 2 too many egg yolks or confusing whites with yolks?? Could you update please.

  5. Andy Author says:

    How many gelatin sheet I need to substitute the gelatin powder?

  6. emily Author says:

    can I use dark chocolate instead of semisweet chocolate?

  7. Shazaa Author says:

    Dear Ella,
    Thank you so much for this wonderfully decadent recipe. I made this today and it came out perfect! Definitely a crowd pleaser!

    1. Ella-HomeCookingAdventure Author says:

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

  8. Evelina Kulinich Author says:

    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?

  9. Khadeeja Author says:

    Hello Ella can dark chocolate be used instead of semi sweet chocolate..??

  10. Aditya Author says:

    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.

  11. Sarah Author says:

    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. 🙂

    1. Ella-HomeCookingAdventure Author says:

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

  12. Khadeeja Author says:

    Hello Ella would love to try this. Can milk chocolate be used instead of semi sweet chocolate

    1. Ella-HomeCookingAdventure Author says:

      yes.. but you get better results with semisweet chocolate

  13. n Author says:

    Dear ella,
    is there any replacement for cornstarch ?

    1. Ella-HomeCookingAdventure Author says:

      yes.. use same amount of flour

    2. Ella-HomeCookingAdventure Author says:

      yes.. use same amount of flour

  14. Tram P. Author says:

    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.

  15. Khadeeja Author says:

    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..??

  16. Rica Author says:

    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? :)?

  17. Sandra Author says:

    Is it necessary to use gelatin powder?

  18. is it necessary to use gelatin powder?

  19. kimberly Author says:

    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!!

  20. Tabetha Author says:

    Is this recipe gluten free?

  21. Gunay Author says:

    This recipe is so amazing – flourless cake with coffee mousse! I made it yesterday, and it became very delicious! Thanks for the recipe!

  22. mehek Author says:

    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…

  23. Helena Author says:

    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.

  24. lorenza Author says:

    mi piacerebbe ci fosse la trduzione in ITALIANO.

  25. resh Author says:

    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 …….

  26. Jessie Author says:

    possibly the best desert i’ve ever made….wow.

  27. kishi Author says:


  28. Ruth Author says:

    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

    1. Ella-HomeCookingAdventure Author says:

      Hello Ruth.

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

  29. Ellie Author says:

    Can I swap out the instant coffee with cocoa powder to make chocolate mousse?

    1. Ella-HomeCookingAdventure Author says:

      Hi Ellie.

      Yes, you can.

  30. hano Author says:

    Can I replace instant coffee with esspresso ?

    1. Ella-HomeCookingAdventure Author says:

      Hello Hano.

      Yes, you can

  31. Ramona Author says:

    Can I leave out the gelatin?

  32. Georgiana Author says:

    Buna, Ella! Te-am descoperit din intamplare si marturisesc ca acum este singura mea sursa de inspiratie cand vine vorba de prajituri pentru orice aniversare, petrecere, sarbatoare si chiar si comanda 🙂 Sunt retete perfecte si fara secrete ascunse care sa “te ajute” sa nu iasa. Urmatoarea prajitura depe lista este aceasta. Am o intgrebare: Pot folosi toate ingredientele in cantitate dubla, dar sa le pun in aceeasi tava, de 20 de cm? Vreau sa iasa mai inalt tortuletul. Multumesc mult si spor la treaba! 🙂

  33. Emily Author says:

    I tried this cake recently and I loved the coffee mousse, but the cake base had a strange taste to it and was pretty dense. Do you have any idea what the problem might be?


  34. Alina Author says:

    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 ??

    1. Ella-HomeCookingAdventure Author says:

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

  35. Varu Author says:

    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.

  36. Alexandra says:

    5 stars
    This is the first recipe I tried from this site and it is wooooow! All my friends would kill for a piece of it. A few years ago (4 or 5), I baked it for one of my friends for his birthday to share it with his team, but he got another one as well from a fan of the team. And my friend said about this coffee cake: “this is soooooo good that only royalty deserves to eat from it!” and I think this sums it all up. Thank you for the recipe, Ella!

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