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Chocolate Orange Mousse Cake

April 12, 2026 By Gretchen

Jump to Recipe Jump to Video Print Recipe

Easy Orange Cake Recipe

is where it all began and this chocolate orange mousse cake
was the first creation I came up with using two simple recipes!

Chocolate Orange Mousse Cake

Another “throw it all in the food processor” mix up 

with simple chocolate mousse that can be made while the cake is baking!

Vegan Chocolate Mousse Cake

Notes For Success:

The best oranges to use are smaller ones like Clementines or small navels 
Basically any orange that has a thinner skin since we are whizzing up the entire orange into the batter!

Definitely slice them open first just to make sure there are no seeds before you whiz them up!
Total weight of orange with skin on is 5oz (that’s approximately 2 small clementines or 1 small navel)
Total volume measure of pureed orange with the skin on is a scant 1/2 cup

If you don’t have a 14 cup capacity food processor you can puree the oranges in a blender
Then mix the recipe by hand in a large mixing bowl

In the video tutorial I baked the batter into 4- 1/8 sheet pans but ended up only using 3 of the layers!
Of course you can make a 4 layer cake with no changes to the recipes below

For a much easier round cake: divide the batter between 3-7″ cake pans
Then build the cake as shown in the video tutorial but with a springform pan instead

I am using Bob’s Red Mill egg replacer here for the best results since this is a very moist cake, it is important to use a dry blend proprietary blend like the Bob’s brand 
Aquafaba or flax meal paste will cause the cake to be heavy and gummy. I have accidentally forgotten to add the egg replacer and it was totally fine!

WATCH HOW TO MAKE THIS CAKE

Orange Mousse Cake

Chocolate Orange Mousse Cake

Chocolate Orange Mousse Cake

Be sure to read the notes for success before beginning
Print Recipe Pin Recipe
Prep Time 40 minutes mins
Cook Time 25 minutes mins
Total Time 1 hour hr 5 minutes mins
Servings 8

Ingredients
  

For the Orange Cake:

  • ¾ cup Plant Milk 177ml
  • 2 Clementines
  • 2 teaspoons Vanilla Extract
  • 2 cups Cake Flour 240g
  • Egg Replacer
  • 1 cup Granulated Sugar 200g
  • 3 teaspoons Baking Powder
  • ¾ teaspoon Salt
  • 9 Tbs Vegetable Oil 135ml

For the Chocolate Mousse:

  • 8 ounces Semi Sweet Vegan Chocolate 8ounces 226g
  • 2 Tbs Hot brewed coffee 30ml
  • 1 teaspoon Vanilla Extract 5ml
  • ¼ cup Aquafaba 60ml
  • 4 Tbs Granulated Sugar 50g
  • ¼ teaspoon Cream Of Tartar
  • 1 cup Vegan Whipped Cream

for the icing

  • ½ Recipe Ganache

Instructions
 

  • Preheat the oven to 350℉ then grease & parchment line 3 - ⅛ sheet pans
  • First pull of the hard stem of the oranges if there are any & check for seeds by slicing them in half & remove seeds if there are any. The skins stay on the orange, so leave that intact.
  • Place all of the cake ingredients into a food processor including the oranges & process until smooth batter (about 1 minute)
  • Pour batter into your prepared cake pans bake for approximately 15-20 minutes or when a toothpick inserted into the center comes out clean.
  • Cool in the pans until you are ready to assemble the cake
  • Set up a cake mold the way I demonstrate in the video tutorial
  • Prepare the chocolate mousse: Whip your favorite vegan whipping cream to medium peaks then reserve in the refrigerator
  • Whip the aquafaba/agar with the cream of tartar to stiff peaks while adding the sugar very slowly
  • Melt the chocolate in a large bowl over a double boiler or in a microwave safe bowl. Add the hot brewed coffee & the vanilla extract to the melted chocolate while whisking vigorously to incorporate well.
  • Cool the chocolate mixture to at least 80°F or slightly cooler or when you add the whipped cream it will melt back to liquid. Add the reserved whipped cream & whisk smooth
  • Now take a small portion of the AF meringue & fold into the chocolate mixture to lighten. Then fold in the rest gently
  • Pour the mousse equally in between each cake layer as you build the cake inside the assembled cake mold, refrigerate to set for at least 4 hours or overnight.
  • Un mold the cake and then add the ganache icing over top

Video

Notes

Be sure to read the notes for success before beginning
Storage Mousse cake must be kept refrigerated at all times, and will stay fresh for up to 1 week. 
Tried this recipe?Let us know how it was!

 

 

Filed Under: All Recipes, Cake Recipes, Individual Desserts, Layer Cakes

Previous Post: « Caramel Banana Mousse Tarts
Next Post: Vegan Caramel Flan »

Reader Interactions

Comments

  1. Dan in Oz

    June 22, 2019 at 9:20 am

    Hi Gretchen

    Planning on making this for an afternoon tea this week, I don’t have access to the egg replacer you mention. Would the same measure of flax be a comparable substitute?

    Thanks heaps

    • Gretchen

      June 22, 2019 at 6:20 pm

      Hi Dan! awesome! Flax is not recommended here- this cake is super moist already and will get heavy with the flax (flax= more fat=heavy) and not a really gret binder in this recipe. If you can get a comparable proprietary blend like Bobs Red Mill or Orgran? That would be best.

  2. Irma

    May 4, 2021 at 10:20 pm

    Hi Gretchen
    Love all your recipes! This looks so delicious and I cannot wait to make it.
    Was following your recipe and have a few questions:
    1) the video measurements are different from the ones on this page. Is that because that’s for four 1/8 layers and this is for two 1/8 layers? Video = more batter?
    2) in the video, you’ve used vinegar to create buttermilk. On this page, there is no vinegar. I’m going to go ahead and add vinegar anyway, but would you prefer a particular way?
    3) you’ve used 4 oranges in the video, and on this page there is just one. Is that because of different volume of batter again?

    I’m following the recipe on this page, using the video to see how you put it all together 🙂 I’m sure it will be delicious! Will report back with results. Wish me luck!!
    And thank you again ????

    • Irma

      May 5, 2021 at 2:32 am

      I made this cake just as it was written on this page, except with vinegar in the milk.
      De-li-cious! You’re spot on – one orange gave me just about 1/2 cup orange pulp/juice!
      It is closest to this orange cake I used to make, which used a lot of eggs. I’m sooooo happy with this recipe, Gretchen. Thank you so very much!!! Can’t wait to make it again for my extended family. Porch drop offs in the near future!
      5 stars!

  3. JN

    May 4, 2021 at 10:59 pm

    FYI, the recipe still has references to poppy seeds in it.

    • Gretchen

      May 5, 2021 at 1:36 am

      thank you!

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Yep, it's me Gretchen~ Owner of Gretchen's Bakery. Well, I no longer own a physical bakery since I sold mine in late 2014 & since 2016 I make nothing but the best vegan recipes! Read More…

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