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A slice of no-bake chocolate orange mousse cake on a white plate, with a creamy chocolate filling, crunchy nutty oat base, and topped with chocolate chunks and grated orand rind. The whole cake is displayed on a glass stand in the background, with fresh oranges.

No-Bake Vegan Chocolate Orange Mousse Cake with Crunchy Oats

If you’re all about that chocolate-orange combo and want to make a dessert that looks fancy but is secretly super easy, this Vegan Dark Chocolate Orange Mousse Cake is for you! You can have this no-bake gluten-free treat ready in a couple of hours, and it’s guaranteed to impress.
by Julie Anne
Prep Time 30 minutes
Cook Time 2 hours
Total Time 2 hours 30 minutes
Course Desserts, Snacks, sweet treat
Cuisine British, French, Mediterranean
Servings 8 servings
Calories 429 kcal

Equipment

1 cake pan (18x8 cm) or silicon mold
1 Spatula or wooden spoon

Ingredients   

Oat and Nut Base:

  • 6 Medjool dates pitted
  • 1 tablespoon pure cocoa powder
  • 1 cup rolled oats 100 grams
  • 2 tablespoons pistachio nutes (shelled) about 25g
  • 2 tablespoons walnuts about 25g
  • 5 tablespoons fresh orange juice about the juice of 1 large juicy orange

The creamy mousse layer:

  • 1 cup pre-soaked cashew nuts 150 grams
  • 1 cup 200g solid coconut milk between 160g - 200g works well
  • 3 tablespoons agave syrup
  • 2 tablespoons pure cocoa powder
  • 2 tablespoons melted coconut oil

Top Layer (The Chocolate Magic:

  • cup pure dark chocolate squares 100 grams
  • 3 tbsp oat milk
  • Zest from 1 orange

Watch me Make it (Video)

Instructions  

  • Soak the cashews – Place the cashew nuts in water for at least 20 minutes or soak them overnight for a creamier texture.
  • Prepare the dates – Remove the pits from the Medjool dates. If they were refrigerated, soak them in warm water for 10 minutes, then drain and squeeze out any excess moisture.
  • Prepare the orange – Grate the orange rind finely and juice half the orange (about 5 tablespoons).
  • Base Layer:
  • In a food processor, blend the oats, pitted dates, mixed nuts, 2 tablespoons of cacao powder, and the fresh orange juice until you get a sticky, slightly crumbly mixture.
  • Line the bottom of a non-stick cake tin with parchment paper or lightly grease a silicone mold.
  • Scoop in the base mixture and press it down firmly with a wooden spoon or the back of a spoon.
  • Mousse Layer:
  • Open the refrigerated coconut milk and scoop out the thick coconut cream. Dont prepeare until ready to use.
  • Drain the soaked cashews and pat them dry with a paper towel to remove excess moisture.
  • In a high-speed blender or food processor, combine the cashews, coconut cream, agave syrup, the remaining cacao powder, and coconut oil and blend at full speed for at least a minute until smooth.
  • Pour the mousse mixture over the base, spreading it evenly.
  • Place the cake tin in the freezer for at least two hours (or longer for a firmer texture).
  • Chocolate Layer:
  • Break the chocolate into small pieces for faster melting.
  • Add the vegetable milk and microwave in 20-second intervals, stirring in between, until the chocolate is fully melted and smooth.
  • Immediately pour the melted chocolate over the frozen mousse layer, spreading it evenly.
  • Sprinkle the grated orange rind on top.
  • Serving:
  • Serve immediately or refrigerate until ready to enjoy.

Notes & Suggestions

Expert Tips for the Best Results
Soak cashews properly - The longer they soak, the silkier your mousse will be. Overnight soaking is ideal. If you're in a hurry like I was, 20 minutes also works well.
Chill coconut milk - Ideally,  the refrigerator should be 4 ° C ( 39° C), this helps separate the solid part from the liquid, giving you a rich and thick consistency, almost like cream. DO NOT take the milk out of the refrigerator until you're ready to blend it. (This prevents the solid part from melting).
Use fresh orange rind - Makes the chocolate orange flavor amazing!
Storage and Shelf Life
Store this cake in an airtight container in the fridge for up to 5 days. It tastes even better the next day as the flavors meld together! The consistency is also more compact and it's easier to slice.
Freezing Instructions
This cake freezes well! Wrap individual slices in parchment paper and store them in a freezer-safe container for up to 2 months. Thaw in the fridge before serving.
Other Ways to Enjoy This Chocolate Orange Recipe
Make mini mousse cups - Divide the layers into small jars for a grab-and-go dessert.
Use seasonal ingredients - Try adding a pinch of cinnamon or fresh berries in summer for a twist.

Nutrition Profile

Nutrition
No-Bake Vegan Chocolate Orange Mousse Cake with Crunchy Oats
Serving Size
 
1 serving
Amount per Serving
Calories
429
% Daily Value*
Fat
 
26
g
40
%
Saturated Fat
 
12.9
g
81
%
Polyunsaturated Fat
 
3.97
g
Monounsaturated Fat
 
7.52
g
Potassium
 
127
mg
4
%
Carbohydrates
 
45
g
15
%
Fiber
 
5.4
g
23
%
Sugar
 
27
g
30
%
Protein
 
8.3
g
17
%
Vitamin A
 
22
IU
0
%
Vitamin C
 
7.6
mg
9
%
Calcium
 
54
mg
5
%
Iron
 
4.2
mg
23
%
* Percent Daily Values are based on a 2000 calorie diet.

The nutritional information is an estimate, calculated automatically per serving, with all values, including calories, based on one serving.

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