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    Home » Recipes » Cakes & Cupcakes

    Published: May 9, 2023 by Paula Montenegro · Income from ads and affiliates

    Chocolate Mousse Cake (vegan)

    Jump to Recipe
    Brown and white text overlay on close up image of slice of chocolate mousse cake with strawberries.

    This rich chocolate cake is a true showstopper with its moist, fudgy layers and smooth 2-ingredient chocolate mousse. The flavor is unique and deeply chocolate. Whether you're hosting a special occasion or simply treating your family, this recipe is bound to impress.

    White cake stand with chocolate mousse cake topped with strawberries. White tile background.

    As an Amazon Associate, I earn from qualifying purchases. Please read my disclosure policy.

    Originally published in 2013, the text and images in this post have been updated to serve you better. The recipe remains the same.

    I'm not used to making vegan desserts; this chocolate cake was my first time experimenting with one.

    I wanted to see what it was like compared to my usual chocolate cake and flourless chocolate torte. It's truly unique in texture and flavor.

    It has none of the traditional ingredients we are used to finding in a cake, like butter, eggs, and milk.

    A dairy-free, moist chocolate cake recipe that is utterly delicious, and a must-try for chocolate lovers, even if you don't follow a plant-based diet.

    Slice of chocolate mousse cake with strawberries being lifted from whole cake.

    If you're not used to vegan baking like me, when you read the list of ingredients in this cake, it feels like some non-foodie editor forgot a part of the recipe.

    Although it's common to replace butter with oil, the idea of replacing eggs with vinegar is mind-blowing. At least to me. Here they are omitted and not missed at all.

    Slice of strawberry topped chocolate mousse cake on a white plate with a fork.
    Table of Contents Open
    Ingredients
    How to make the cake batter
    2-ingredient chocolate mousse
    Berry topping
    Kitchen notes
    Related recipes you might like:
    Chocolate Mousse Cake (dairy-free)

    Ingredients

    Use a clear shot of the ingredients for this recipe, prepped, and labeled if necessary. Insert the ingredients into the list below, omitting quantities.

    • Chocolate: use your favorite dark semisweet chocolate for this recipe. I like Callebaut 54% chocolate wafers or Ghirardelli Premium baking bar.
    • Cocoa powder: always use unsweetened. I like Hershey's unsweetened cocoa powder, Ghirardelli Premium baking cocoa, and Scharffen Berger natural cocoa powder. And, in my experience, the dark ones are the best (this does not apply to the super dark used for making homemade Oreo cookies known as dark cocoa powder).
    • Vegetable oil: sunflower, coconut, canola.
    • Vegetable milk: soy milk and almond milk work very well.
    • All-purpose flour.
    • White, granulated sugar.
    • Baking powder and baking soda: make sure they aren't expired. 
    • Vinegar: white is the most neutral, but I've used red wine and apple cider vinegar for this cake with great results.
    • Salt: I like to use kosher salt when baking. But regular table salt works just fine.
    • Vanilla: I use pure vanilla extract or pure vanilla paste when available, but a good vanilla essence (artificially flavored) also works and is infinitely cheaper. 
    • Strawberries: fresh are always the first choice, but a vegan strawberry sauce also works. It will render a sweeter cake.
    • Water and ice cubes: for the chocolate mousse process.

    See the recipe card towards the end of this post for quantities.

    Bowls on white marble containing ingredients for vegan chocolate cake including strawberries, oil, flour, cocoa powder, vegetable milk, sugar, water.

    How to make the cake batter

    Use an electric mixer or a stand mixer with the paddle attachment.

    One or two layers: I like the single-layer cake (9-inch springform pan), but you can use 2 round 8-inch cake pans, use the mousse as filling and topping, and make a naked cake (no frosting on the sides).

    Metal round cake pan with chocolate cake batter on a white marble surface.

    You'll have a shiny and smooth batter, just like in a regular chocolate cake mixture.

    Baked chocolate cake in a metal round pan on a white marble surface.

    The cake will sink in the middle as it cools down, which is fine. The indentation will be filled with the chocolate mousse.

    2-ingredient chocolate mousse

    Chocolate mousse is a wonderful thing, but it can be time-consuming to make, and you end up with a pile of dirty bowls on top of the ones you used for the cake.

    So this decadent chocolate mousse filling is magic.

    Just two ingredients: dark chocolate and hot water. Chocolate is ruined if you add a few drops, but not if you add a lot of water. 

    It does work, so well and so simple. Chocolate mousse in no time. And perfect for filling.

    The chocolate flavor is absolute, so use one you love straight from the packet.

    Chocolate mousse in a glass jar over a glass bowl with ice. White marble surface.

    Melt chocolate in a large bowl, add hot water and beat at high speed over a bowl of ice water. Nothing will appear to happen for the first few minutes. But just wait and see. It'll start getting cold and stiff suddenly, like a regular mousse.

    Vintage Kitchen tip: if the mousse gets too firm to spread, add a few teaspoons of hot water and beat some more until it loosens up and you reach the desired consistency and creamy texture.

    Strawberry topped chocolate mousse cake on a white cake stand with a slice being lifted.

    Berry topping

    • Fresh strawberries: we might debate that it's an optional ingredient, but I highly encourage you to add some. They're tangy but sweet and balance out the richness of the mousse.
    • Strawberry sauce or topping is another alternative. I find it to be too much on top of the mousse, but it works if you like sweeter desserts, as this vegan cake is not very sweet.
    • Other fresh berries: use one, like raspberries, or a mix with blackberries and blueberries. This can be instead or in addition to the strawberries.
    Front view of eaten slice of chocolate mousse cake with strawberries on a white plate.

    Kitchen notes

    • Organization: read the recipe first and ensure you have ingredients at the correct temperature, equipment, and enough workspace. This will make the process so much easier.
    • Baking time: keep in mind that all ovens and pans are different, even if they look similar. The baking time in my recipes is as accurate as it can be, but it might take you more or less time. You can use a thermometer(like the OXO oven thermometer) to check that your oven is at the right temperature. I recommend you keep track of how your oven works and what tiny details you might need to adjust. 
    • Chocolate mousse: use it immediately, so make it when the cake is completely cool and ready to be filled.
    • Make ahead: the cake layer can be made several days before and kept well wrapped in the fridge or frozen for a month.
    • Serving: due to the chocolate mousse topping, this cake is best served slightly cold and not at room temperature as I usually recommend with chocolate cakes.
    • All chocolate cake: omit the strawberries and add some chocolate shavings or drizzle chocolate ganache on top of the mousse.

    Related recipes you might like:

    • A berry topped chocolate torte on a pink cake stand with one slice being removed. Grey and white background.
      Chocolate Torte
    • Glass cup with dark chocolate mousse with dollop of cream and pomegranate seeds. Wooden surface.
      Dark Chocolate Mousse
    • Squares of chocolate brownie Cake on white surface, pink background
      Triple Chocolate Brownie Cake
    • Partial top view of Chocolate mousse pie with crushed candy canes on a white surface.
      Chocolate Mint Mousse Pie

    Let me know in the comments below if you made this recipe and loved it and if you had issues so we can troubleshoot together. I love to hear what you think, always. Thanks for being here. It's much appreciated.
    You might also consider subscribing to our FREE email series to Boost your Home Baking Skills! And our regular newsletter.
    And let's connect via Facebook, Instagram, and Pinterest.

    Print
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    A strawberry topped chocolate mousse cake on a white cake stand. White tile background.

    Chocolate Mousse Cake (dairy-free)

    ★★★★★

    5 from 1 reviews

    Print Recipe
    Save Recipe Recipe Saved

    This vegan chocolate cake is a true showstopper with its moist, fudgy layers and smooth 2-ingredient chocolate mousse. The flavor is unique and deeply chocolate. Whether you're hosting a special occasion or simply treating your family, this recipe is bound to impress.

    • Total Time: 2 hours 10 minutes
    • Yield: 8 servings

    Ingredients

    Units

    For the cake layer:

    • 2 cups all-purpose flour
    • ¾ cup unsweetened cocoa powder
    • 2 teaspoons baking soda
    • 1 teaspoon baking powder
    • Pinch of salt
    • 1 ¾ cups soy or almond milk
    • 2 teaspoons white or red wine vinegar
    • 1 ⅔ cups sugar
    • 1 ¼ cups vegetable oil (sunflower, coconut oil, or light olive oil)
    • 2 tablespoons vanilla extract

    For the chocolate mousse layer:

    • 10 oz. dark semi-sweet chocolate, chopped
    • ¾ cup hot water
    • Ice
    • 1 ½ cups fresh strawberries (hulled and sliced)
    • Powdered sugar (for sprinkling)

    Instructions

    For the cake:

    1. Preheat oven to 350ºF/180ºC. Butter or grease a 9-inch springform cake pan. You can also use two 8-inch round cake pans and fill the layers with the mousse. 
    2. In a large bowl, sift together the dry ingredients: flour, cacao powder, baking soda, baking powder, and salt.
    3. Stir to combine and make a well in the center.
    4. Add soy milk, vinegar, sugar, oil and vanilla. Beat or whisk until very well combined. The batter will be quite runny.
    5. Pour into prepared pan and bake for 45-50 minutes or until a cake tester or toothpick comes out with almost no crumbs attached. It will feel springy to the touch.
    6. Let cool on a wire rack and then unmold onto the serving platter.
    7. Cover the top with the chocolate mousse and decorate with sliced fresh strawberries. Sprinkle with sugar and serve.

    For the chocolate mousse:

    1. Begin making the mousse right after the cake is cooled and removed from the pan.
    2. Have ready a large bowl with ice and cold water (ice water), enough so that the bowl with the chocolate fits comfortably.
    3. Melt the chocolate: start with chopped chocolate in a microwavable or glass bowl. You can use the microwave (short 10-15 second spurts stirring well between each one until it's fully melted) or a double boiler with the bowl containing the chopped chocolate not touching the water. In both cases, make sure it doesn't scorch.
    4. Add the hot water to the chocolate all at once. Immediately put the bowl over the ice water.
    5. With an electric mixer, start beating at high speed. It will not thicken for the first few minutes, but it will start to do so unexpectedly. And it will stiffen pretty quickly.
    6. If the mousse is too thick to spread, add a few teaspoons of very hot tap water and beat until smooth until spreadable. Use immediately.

    Notes

    You can use any fruit you like for the topping and your favorite frosting or whipped cream.

    • Author: Paula Montenegro
    • Prep Time: 20 minutes
    • Cooling time: 60 minutes
    • Cook Time: 50 minutes
    • Category: Cakes
    • Method: Baking
    • Cuisine: International

    Keywords: vegan chocolate mousse cake

    Did you make this recipe?

    Tag @vintagekitchenblog on Instagram and hashtag it #vintagekitchenblog

    Adapted from Tea with Bea.

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    About Paula Montenegro

    I'm Paula, a baker for more than 30 years and your designated recipe developer, sharing the best ones here with simple ingredients + easy-to-follow instructions.

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    1. Sylvia says

      August 26, 2019 at 12:19 pm

      I tried this recipe more times and is amazing, do you have any suggestion for gluten free version? Would it work with rice flour? Thanks

      ★★★★★

      Reply
      • Paula Montenegro says

        August 26, 2019 at 3:58 pm

        Glad you like it! If I were to try a GF version, I would use almond meal and some rice flour. It will probably be fudgier.

        Reply
    2. Natividad Robles says

      September 20, 2015 at 5:05 pm

      How many calories brings a portion of 100g, is there any other substitute for the flour?

      Reply
      • wp_vknotes_admin says

        September 20, 2015 at 6:46 pm

        Hi Natividad! You might try substituting the flour for a gluten free blend. I haven't tried it though.
        Regarding calories, I don't know. But less than with regular recipes with butter.

        Reply
      • Natividad Robles says

        September 21, 2015 at 3:00 am

        Thank you very much I will try with a gluten free blend and share with you!

        Reply
    3. Laura@bakinginpyjamas says

      May 27, 2013 at 1:22 pm

      This looks delicious. I came across your blog through this month's chocolate party link up. Such a beautiful looking cake.

      Reply
    4. Grandbabycakes says

      May 21, 2013 at 3:34 am

      That cake looks so unreal! And the fact that it is vegan is making me smile as wide as can be! I definitely need to try this!

      Reply
    5. yummychunklet says

      May 14, 2013 at 5:04 pm

      How decadent yet fresh! Yum!

      Reply
    6. Nancy @ gottagetbaked says

      May 13, 2013 at 7:04 pm

      Gah! I want a piece of this cake so badly right now! Your desserts and dishes always turn out looking like beautiful masterpieces, Paula. I made a vegan chocolate cake this past summer and I absolutely loved it I couldn't believe it tasted so good so I don't doubt for a minute that this is mindblowingly delicious.

      Reply
    7. Averie @ Averie Cooks says

      May 13, 2013 at 1:12 pm

      I know of plenty of vegan chocolate cake recipes that are touted as being as good/better than non-vegan ones and I actually have one on my radar screen I want to trial! It's for cupcakes, not cake, but same difference.

      Your cake is gorgeous, vegan or otherwise!

      Reply
    8. e / dig in says

      May 13, 2013 at 1:24 am

      paula i am like you - no eggs, no butter?? oil i can understand but vinegar? i too have been intrigued by vegan recipes, but also dubious, because i see weird substitution ingredients. but this cake is proof it can be done - and paula, i would of course trust you! it's a delicious looking cake no matter what label it has. thank you!

      Reply
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    Hi, I'm Paula!

    A baker for more than 30 years and your designated recipe finder, sharing the best ones on this blog, with simple ingredients + easy-to-follow instructions.

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