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Irish Cream Mousse Cake

March 9, 2022 By Gretchen 3 Comments

Just in time for Saint Patrick’s Day

Although this Irish Cream Mousse Cake is great all throughout the year

If you need a stunning cake to impress just about everyone

Simple four ingredient Irish Cream Mousse Cake is the way to go!

Irish Cream Mousse Cake

I’ve baked my best recipe for fudge brownies as the base for this cake

But you can use just about anything you like the best!

To avoid turning on the ovens altogether and keep this dessert 100% no bake

You can make up a quick chocolate sandwich cookie crust instead, just like you would for a cheesecake!

Irish Cream Mousse Cake

Irish cream buttercream icing is completely optional

However since this is a no sugar added recipe for the Irish Cream Mousse

The buttercream really added a perfect compliment to that rich deep triple chocolate

Irish Cream Mousse Cake

That’s right ~ Triple Chocolate!

Fudge brownie base, chocolate mousse and Irish Cream ganache too!

Let’s talk about Irish Cream

Irish Cream Mousse Cake

Even though Bailey’s now makes a vegan Irish Cream, I’ve made a homemade recipe anyway

It’s so incredibly easy and I saved a ton of money by doing it this way!

Jameson is my whiskey of choice for baking (and in my younger days ~ for drinking too! Shhh!)

So buying a bottle of whiskey versus buying a bottle of Irish Cream was a no brainer

Irish Cream Mousse Cake

I can use the whiskey in so many more baking recipes rather than being chained to just Irish Cream that I would probably only use once a year

Substitutions & Notes for Success:

For those who cannot use alcohol in their baking I would suggest to use coffee as a substitute

Those who do not use coffee either

I would suggest to click through to my Ferrero Rocher Mousse Cake recipe instead of this one

Vegan Ferrero Rocher Mousse Cake

I am using cashews as the base for this mousse recipe

So if you must stay away from nuts I would recommend to use this recipe for chocolate mousse instead

In addition to the vegan chocolate couverture and cashews it is simply Irish Cream and whipped cream folded in!

Silk brand makes my life so much easier now with their vegan heavy whipping cream in a carton *not sponsored

vegan Whipped Cream

Silk®

However if you are not fortunate to get your hands on that product I have several other homemade options for you here!

Vegan Whipped Cream

Vegan Whipped Cream

To make a no bake crust for this mousse cake simply combine 1½ cups of your favorite cookie

Crushed up with 4 Tablespoons of melted vegan butter

Press it into the bottom of a spring form pan and refrigerate while you prepare the mousse recipe

I have this Irish Cream Mousse Cake listed as serving 16 people because this is one rich cake!

One small slice is all you need!

Irish Cream Mousse Cake

CLICK HERE FOR THE FULL YOUTUBE VIDEO TUTORIAL FOR HOW TO MAKE THIS CAKE!

Irish Cream Mousse Cake

For more awesome recipes like this one, click the links below!

Vegan Ferrero Rocher Mousse Cake
Ferrero Rocher Mousse Cake
No Bake Key Lime Cheesecake
Key Lime Cheesecake
No Bake Chocolate Raspberry Ganache Tart
Chocolate Ganache Tart

Vegan Ferrero Rocher Mousse Cake

No Bake Key Lime Pie Cheesecake

No Bake Chocolate Raspberry Ganache Tart

Homemade Irish Cream

Homemade Irish Cream
 
Print
Prep time
10 mins
Total time
10 mins
 
Serves: 1½ cups
Ingredients
  • Irish Whiskey ⅓ cup
  • Strong Brewed Coffee ¼ cup
  • Sugar of your choice/ Agave / Maple Syrup / Monkfruit:: ¼ cup
  • Almond Milk or your choice plant milk ¾ cup
Instructions
  1. If using granulated sugar it is best to mix that first with the hot brewed coffee to dissolve
  2. Then combine everything together in a jar and store in the refrigerator for up to 2 months
3.5.3251

For the Mousse Cake
Irish Cream Mousse Cake
 
Print
Prep time
4 hours
Bake time
30 mins
Total time
4 hours 30 mins
 
Serves: serves 16ppl
Ingredients
  • ½ Recipe Fudge Brownie baked into an 8" springform pan
  • For the Irish Cream Mousse
  • Vegan Semi Sweet Chocolate Couverture 6 ounces approx 1 cup (168g)
  • Raw Cashews 1 cup (150g)
  • Irish Cream ¾ cup (177ml)
  • Whipped Cream 2 cups whipped volume (475ml)
  • For the Irish Cream Ganache
  • Vegan Semi Sweet Chocolate Couverture 4ounces approximately ¾ cup (113g)
  • Plant Milk ¼ cup (60ml)
  • Irish Cream 2 Tablespoons
  • For the Irish Cream Buttercream
  • Vegan Butter 2 sticks (226g)
  • Confectioners Sugar 2 cups (240g)
  • Salt ¼ teaspoon
  • Irish Cream 4 Tablespoons (60ml)
Instructions
  1. First prepare your 8" springform pan with parchment paper lining and a spray of pan spray
  2. Preheat the oven to 350°F and prepare the brownie recipe as per the instructions on that post
  3. Once the brownie is completely cooled
  4. Prepare the chocolate mousse by bringing the cashews to a rolling boil in approximately 1½ cups of water
  5. Turn off the heat and let them soak for 30 minutes, then drain
  6. Combine the warm cashews and room temperature Irish Cream together in a high speed blender and blend smooth
  7. Melt the vegan chocolate in a large bowl then add the warm cashew/Irish Cream mixture and whisk smooth
  8. Whip the vegan whipped cream to medium peaks then fold into the chocolate base only of the chocolate mixture is cool to the touch.
  9. Pour the Irish Cream Chocolate Mousse into the springform pan with the brownie base & also lined with an acetate cake strip (*optional) and then refrigerate until set approximately 3 hours or overnight
  10. Prepare the Irish Cream Ganache by combining all the ingredients for the ganache in a small sauce pot and heat over low-medium heat whisking constantly until melted & smooth
  11. Pour the warm ganache over the set mousse cake and refrigerate until set
  12. Meanwhile prepare the Irish Cream buttercream by whipping the room temperature vegan butter with the salt until fluffy with the paddle attachment of an electric stand mixer
  13. Add the sifted confectioners sugar and mix smooth
  14. Once all the sugar is incorporated, scrape the bottom & sides of the bowl and whip on high for 3 minutes
  15. On low speed slowly add the Irish Cream 1 Tbs at a time until it is all incorporated
  16. Pipe the buttercream onto the mousse cake as shown in the video tutorial
  17. Use the excess ganache for a drizzle on each slice
Notes
Irish Cream Mousse Cake must be kept refrigerated at all times and will stay fresh in the refrigerator covered loosely for up to 1 week

Freeze for up to 1 month
3.5.3251

Filed Under: All Recipes, Cake Recipes, Holiday Baking, Layer Cakes, Mousse Recipes

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Reader Interactions

Comments

  1. John

    March 14, 2022 at 3:05 am

    An especially wonderful thing about your recipes Gretchen is how many options you give people to take part in making one of your delicious plant based desserts. You rock.

    Reply
  2. Tammy

    March 14, 2022 at 5:24 am

    You never cease to amaze me! This looks and sounds DELICIOUS!

    Reply
  3. Brian

    May 7, 2022 at 11:31 pm

    Hi Gretchen, would it be possible to substitute the cashews for a different kind of nut like almond or something else? Thank you, the recipe looks amazing.

    Reply

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