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Silky smooth, deeply chocolatey, and kissed with the warm notes of Irish cream– this Irish cream chocolate mousse is the ultimate no-bake dessert for any chocolate lover. Whether you’re planning a cozy holiday dinner, a sophisticated dinner party, or just need a decadent treat to end your week, this mousse brings restaurant-style indulgence straight to your kitchen. With only three ingredients and minimal prep, it’s a fuss-free favorite that still feels incredibly elegant. It’s light, fluffy, and infused with the irresistible flavor of Irish cream- perfect for any time of year, but especially around festive seasons, like St. Patrick’s Day.

The Chemistry of Chocolate Mousse
The magic of mousse lies in texture- it’s all about getting that light, airy mouthfeel. In this recipe, the combination of heavy cream and melted chocolate creates a ganache base. When chilled and then whipped, that base transforms into a fluffy yet rich mousse. The key is temperature control. If the chocolate is too hot or cold when mixing with cream, it can seize or curdle. Whipping cold cream after the ganache is set adds volume through trapped air bubbles, giving you that signature cloud-like texture. The Irish cream flavoring adds flavor without the alcohol.

Step-by-Step Instructions
- Melt the chocolate base. In a microwave-safe bowl, pour one bag of dark chocolate chips and 1 cup of heavy whipping cream (half the total). Microwave on high for 30 seconds. Stir. Repeat for another 30 seconds. Continue stirring- the chocolate should melt into a smooth ganache. If needed, microwave a final 30 seconds.
- Add Irish cream & remaining cream. Once the ganache is smooth and glossy, whisk in the remaining 1 cup of heavy whipping cream and 1/4 cup of Irish cream flavoring.
- Chill. Place the bowl of chocolate cream into the freezer for 30 minutes. This step is key for creating the right temperature to whip it later.
- Whip to perfection. Remove the chilled chocolate mixture. Using an electric hand mixer, whip on high speed for several minutes until the mousse forms stiff peaks.
- Serve and enjoy. Spoon into serving glasses, chill if desired, or enjoy immediately with your favorite toppings!


Recipe Troubleshooting
If the mousse isn’t setting properly. It’s usually due to too much liquid and not enough chilling time. Stick closely to the ratio of cream to chocolate, and always chill the mixture fully before whipping.
If your chocolate seized when adding the Irish cream flavoring, it likely cooled too much, or the flavoring was too cold – try bringing them both to room temperature next time.
If your mousse stays runny, double-check the chilling time and whip it longer until you see stiff peaks.
A grainy or lumpy mousse often means the chocolate wasn’t melted properly or cooled too much before adding Irish cream, which can cause it to seize. Be patient with the melting process—short bursts in the microwave and consistent stirring work best.
A dense texture usually means the whipped cream was mixed too aggressively; try folding it more gently.
If it took longer to set than expected, make sure your fridge is cold enough – some home fridges run warmer than commercial ones.
If your mousse tastes too strongly of Irish cream, it might be because too much was added – 1/4 cup is plenty for flavor without overpowering. Anything more than 1/4 cup can also throw off the texture by adding too much liquid.
If the Irish cream flavor is too subtle for you, reduce the cream slightly and add a teaspoon of espresso powder to enhance the notes.
If your texture turns out dense or deflated, chances are the cream was over-whipped or mixed too aggressively. Gentle folding and stopping when you reach stiff peaks is key to mousse success.
You can make chocolate mousse without gelatin– this version doesn’t use it and relies on chilling and whipped cream for structure. It typically takes about 30 minutes to freeze, but you can store it in the fridge longer.
Substitutions
- Dark chocolate works best for balancing the sweetness of the Irish cream, but milk chocolate is fine if you prefer a sweeter touch.
- For those who find it too sweet, opt for bittersweet or 70% dark chocolate.
- You can make this recipe dairy-free if you swap the cream with a coconut or almond alternative.
- You can swap the Irish cream flavoring for Bailey’s chocolate to create a boozy treat.

No-Bake Treat
This creamy, no-bake treat is perfect when craving something a little indulgent. This recipe can be your go-to for a quick dessert recipe for a dinner party. It easily transforms into a layered chocolate parfait or an elegant dessert cup. Add whipped cream topping and dust with cocoa to make it extra fancy. Since it’s eggless, it fits the bill for anyone searching for an eggless mousse recipe.
Seasonal Chocolate Mousse
This dessert shines during the holidays- from Christmas to New Year’s Eve desserts or any winter comfort moment. It’s perfect for St. Patrick’s Day. You can easily serve this in mini cups for easy party desserts. It makes a dreamy Valentine’s Day chocolate dessert for date night.
This easy, no-bake dessert brings a festive flair to the menu during spring entertaining. For a boozy twist, you can always substitute the alcohol-free Irish cream flavoring for Bailey’s chocolate.

Serving Suggestion
To serve, spoon your mousse into elegant dessert glasses, martini glasses, or petite ramekins for a refined look. Top with whipped cream, a few chocolate shavings, or a delicate dusting of cocoa powder.
You can add a drizzle of warm chocolate ganache and garnish with fresh mint leaves or edible gold leaf.
This dessert is perfect for after a meal of hearty bangers and mash with a side of Irish soda bread.
Storage Tips
Fridge– Store any leftover mousse in an airtight container in the refrigerator for up to 3 days. For the best texture, avoid stirring once set- just spoon and serve. If you’ve pre-portioned it into cups, cover each one with plastic wrap to prevent drying out or absorbing fridge odors.
Freezer– You can freeze chocolate mousse for up to 2 months. Just spoon it into freezer-safe containers and seal it tightly. When ready to enjoy, thaw in the fridge overnight. The texture may soften slightly but will still taste amazing. Stir gently if needed before serving.
Making Ahead– This dessert is perfect for making ahead! Prepare the mousse the night before and refrigerate until ready to serve. You can pipe it into cups and cover them for parties so they’re presentation-ready. You can even make the chocolate ganache base a day in advance and whip it just before serving for that fresh, fluffy texture.
Recommended Products
Irish Cream Chocolate Mousse
Whether you’re making it for a holiday, a date night, or just because you’re craving something creamy and indulgent, this Irish cream chocolate mousse hits the spot every single time. It’s quick, no-bake, and tastes like a luxurious treat with minimal effort. So go ahead- treat yourself and maybe a lucky friend or two. And if you try it, don’t forget to share your thoughts below on the rating and comments.

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No-Bake Irish Cream Chocolate Mousse (Alcohol Free)
Ingredients
- 1 bag dark chocolate chips
- 2 cups heavy whipping cream
- 1/4 cup Irish cream flavoring
Instructions
- In a microwave-safe bowl, pour the bag of chocolate chips and 1/2 of the heavy whipping cream.
- Cook for 30 seconds in the microwave, stir, and cook again for 30 seconds. The chocolate ganache should be melted as you stir, but if needed, cook an additional 30 seconds.
- After the ganache is fully melted and smooth, whisk in the rest of the cream (1 1/2 cup) and 1/4 cup Irish cream flavoring.
- Place the bowl of chocolate cream in the freezer to chill for 30 minutes.
- After 30 minutes, using an electric hand mixer, whip the cream on high speed until it the cream is at stiff peak.
- Serve chilled.
Nutrition
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