Decadent Pistachio Mousse Chocolate Ganache

Section: Sweet Treats for Any Occasion

This dessert delivers layers of velvety chocolate ganache and air-light pistachio mousse, creating a sophisticated harmony of flavors. Fresh pistachios are finely ground and combined with sweetened, vanilla-infused cream before being set with gelatin for a cloud-like texture. The dark chocolate ganache adds deep, indulgent notes, contrasting delightfully with the subtle nuttiness. Finished with a sprinkle of chopped pistachios or chocolate shavings, this treat is perfect for elevating special occasions and bringing French patisserie elegance into your kitchen.

Savor by Sophie official logo
Created By Sophie
Updated on Sat, 22 Nov 2025 20:54:53 GMT
Two glasses of chocolate and pistachio dessert. Save
Two glasses of chocolate and pistachio dessert. | savorbysophie.com

This decadent pistachio mousse with rich chocolate ganache is what I make when only pure indulgence will do. Every spoonful is a harmony of salty sweet pistachios balanced by the silkiest dark chocolate ganache. If you want an easy show stopping dessert with that elegant French touch this recipe is your answer.

I made this for my anniversary dinner once and my spouse asked if we could put it on the birthday menu every year. It is now our go to when we want to wow our guests and ourselves.

Ingredients

  • Fresh pistachios: bright green color and real flavor make a huge difference so find unsalted nuts for best results
  • Dark chocolate: pick a bar that you love to eat on its own with a cacao percentage around seventy
  • Heavy cream: creates that luscious mousse texture try to find cream with at least thirty five percent fat
  • Sugar: regular granulated sugar keeps things smooth and balanced
  • Vanilla extract: look for pure extract not imitation for an elevated taste
  • Salt: just a little bit wakes up the nutty flavor do not skip it
  • Gelatin: unflavored powder sets the mousse so it holds its shape nicely
  • Water: hydrates the gelatin and helps with a velvety set

Instructions

Prepare the Pistachios:
Finely grind the shelled pistachios in a food processor until they resemble a fluffy powder This ensures the mousse stays smooth and mixes perfectly into the cream
Heat the Cream:
Pour heavy cream into a small saucepan and warm gently over medium low heat until you see steam swirling across the surface Do not let it boil Add the sugar vanilla and pinch of salt Stir patiently until the sugar dissolves completely
Capture the Pistachio Flavor:
Remove your cream mixture from the heat as soon as the sugar dissolves Immediately add the ground pistachios Stir to blend thoroughly Let the mixture cool for about five minutes so it is not too hot for the gelatin
Bloom the Gelatin:
In a small bowl sprinkle gelatin over cold water and let it sit for about two minutes It will turn thick and jelly like Heat gently in the microwave or over a double boiler just until it melts and becomes clear Do not let it get too hot
Combine and Chill:
Whisk the melted gelatin into the slightly cooled pistachio cream Make sure to combine evenly so the mousse sets uniformly Pour mixture into individual serving glasses Cover and chill in the refrigerator for at least three hours or until set
Make the Ganache:
When ready to serve gently melt dark chocolate with a splash of heavy cream either over a low double boiler or in short microwave bursts Stir until shiny and silky Pour over the set mousse and let it rest for a few minutes for the ganache to thicken
Garnish and Enjoy:
Finish each glass with a sprinkle of chopped pistachios or a few dark chocolate curls for added elegance Serve well chilled and savor every spoonful
Two glasses of chocolate dessert with nuts on top.
Two glasses of chocolate dessert with nuts on top. | savorbysophie.com

The pistachios are my favorite part They add real color and robust flavor My kids always try to sneak a few from the bowl while I am grinding them and it has become a running kitchen joke Every time I make this I am reminded of joyful celebrations and laughter around the table

Storage Tips

Cover the individual mousse cups tightly with wrap before refrigerating If you have leftovers they will keep well for up to three days Just be sure to garnish with fresh pistachios right before serving for maximum crunch Chocolate ganache may thicken but a quick sit on the counter will make it dreamy again

Ingredient Substitutions

You can swap half the pistachios with toasted hazelnuts for a different twist If you are dairy free use coconut cream and check that your chocolate is also dairy free Agar powder can work instead of gelatin though the texture may be a bit bouncier

Serving Suggestions

For dinner parties serve the mousse in elegant glass jars or espresso cups Add a small crisp cookie alongside for an extra special finish If you want to get even fancier top with a dollop of softly whipped cream or a single gold leaf

Cultural Context

Mousse originated in French cuisine as a way to showcase richness and flavor with minimal effort Pistachios have long been prized in Mediterranean cooking so this dessert bridges two culinary worlds in one delicious dish

Seasonal Adaptations

Just picked spring strawberries sliced on top add brightness Shavings of white chocolate look festive in winter Crushed roasted pistachios offer a rustic autumn touch

Success Stories

After sharing this recipe at a potluck I was asked for it four times before dessert was over My neighbor made a dairy free batch with coconut cream and told me her guests had no idea it was lighter It is always a winner at holiday tables and special celebrations

Freezer Meal Conversion

For make ahead magic pour mousse into small freezer safe jars and freeze up to a month Defrost overnight in the fridge and add ganache just before serving The texture remains impressively creamy and the flavors stay bright

Two glasses of chocolate dessert with almonds on top.
Two glasses of chocolate dessert with almonds on top. | savorbysophie.com

This mousse always impresses guests and feels as luxurious as a patisserie treat. Do not be surprised if you are asked for the recipe after every celebration.

Common Recipe Questions

→ What type of chocolate works best for the ganache?

Dark chocolate with 60-70% cocoa provides a rich, balanced flavor that complements the pistachios without overpowering their nutty nuances.

→ Can the mousse be made ahead of time?

Yes, making it in advance allows the mousse to firm up beautifully in the refrigerator, ensuring optimal texture when served.

→ Is it possible to prepare this dessert without gelatin?

Substituting gelatin with agar-agar or a vegetarian alternative is possible, but follow package instructions for best results in setting the mousse.

→ How should the pistachios be prepared?

Shelled, unsalted pistachios are finely ground in a food processor until they reach a soft, powdery texture for smooth blending into the mousse base.

→ What garnishes pair well with this dessert?

Chopped pistachios, chocolate shavings, or edible gold leaf add a touch of elegance and enhance the visual appeal of each serving.

→ Can I use white chocolate for the ganache?

While dark chocolate is traditional, white chocolate creates a sweeter, milder ganache that still pairs well with the pistachio mousse.

Decadent Pistachio Mousse Chocolate Ganache

Rich pistachio mousse layered with smooth chocolate ganache for an elegant, nutty dessert experience.

Preparation Time
20 mins
Time to Cook
~
Overall Time
20 mins
Created By: Sophie

Recipe Type: Desserts

Level of Expertise: Requires Some Skill

Cuisine Style: French

Makes: 4 Portions

Dietary Needs: Plant-Based, No Gluten

Ingredients You’ll Need

→ Mousse Base

01 240 grams fresh pistachios, shelled and unsalted
02 240 millilitres heavy cream
03 100 grams granulated sugar
04 1 teaspoon vanilla extract
05 Pinch of fine salt
06 1 teaspoon powdered gelatin
07 30 millilitres cold water

→ Chocolate Ganache

08 225 grams dark chocolate

How to Make It

Step 01

Grind the shelled, unsalted pistachios in a food processor until a fine powder consistency is reached.

Step 02

Warm the heavy cream in a saucepan over medium heat until it just begins to simmer. Stir in the sugar, salt, and vanilla extract; continue stirring until the sugar is fully dissolved.

Step 03

Remove the saucepan from heat. Stir in the pistachio powder and allow the mixture to cool slightly.

Step 04

In a small bowl, sprinkle the powdered gelatin over cold water and let stand until fully bloomed. Gently heat the bloomed gelatin until completely dissolved.

Step 05

Stir the dissolved gelatin into the pistachio cream mixture, ensuring thorough blending.

Step 06

Evenly divide the pistachio mixture among serving glasses. Refrigerate until set and well chilled.

Step 07

Melt dark chocolate gently over a bain-marie or in short microwave bursts until smooth for ganache garnishing, if desired.

Step 08

Serve mousse chilled, garnished with chopped pistachios or a drizzle of chocolate ganache.

Extra Tips

  1. For best flavour, toast pistachios briefly before grinding to intensify nuttiness.

Recommended Tools

  • Food processor
  • Saucepan
  • Mixing bowls
  • Measuring spoons
  • Rubber spatula
  • Serving glasses

Allergen Details

Check all the ingredients to avoid allergens, and seek medical advice if you’re unsure.
  • Contains tree nuts (pistachios) and dairy.

Nutritional Info (Per Serving)

These nutrition details are for informational purposes only and shouldn’t replace professional dietary guidance.
  • Calories: 380
  • Fat: 28 g
  • Carbs: 28 g
  • Protein: 6 g