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This No Bake Chocolate Mousse Pie is a rich, creamy chocolate mousse pie made with a chocolate cookie crust, fluffy homemade chocolate mousse, and a cloud of whipped cream. It chills in the refrigerator instead of baking, making it a perfect make-ahead dessert for summer parties, holidays, or any time you need a chocolate dessert that feels impressive but is simple to prep ahead.
Table of Contents
- Kellie’s Note Easy As Pie
- Chocolate Mousse Pie Ingredients
- Substitutions and Variations
- How To Make Chocolate Mousse Pie
- Kellie’s Tips for the Best Chocolate Mousse Pie
- Why Is the Chocolate Layer Hard to Slice?
- How to Make in Advance
- Can You Freeze Chocolate Mousse Pie?
- How to Store Chocolate Mousse Pie
- More Easy Pie Recipes
- Chocolate Mousse Pie Recipe
Kellie’s Note
Easy As Pie
I grew up in a food-loving family, and chocolate mousse pie was always one of my favorite chocolate desserts. This version keeps everything cool and easy with a no-bake cookie crust, a decadent chocolate mousse filling, and a whipped cream topping that makes every slice feel light, fluffy, and special.
It’s simply heaven in a pie plate.
Chocolate Mousse Pie Ingredients
Here’s what makes this chocolate mousse pie so rich, fluffy, and easy to slice:
- Chocolate cookie crumbs: Chocolate wafer cookies or Oreo thins make a rich, sturdy crust. Crush them finely so the crust packs tightly into the pie plate.
- Salted butter: Melted butter binds the cookie crumbs together and helps the crust hold its shape.
- Semi-sweet chocolate: You’ll use chocolate in both the crust and the mousse. Use good-quality chocolate and melt it until completely smooth for the best texture.
- Heavy cream: Heavy cream gives the mousse its light, fluffy texture and creates the whipped cream topping.
- Egg whites: Whipped egg whites help make the mousse airy and cloud-like.
- Sugar: A small amount of sugar stabilizes and sweetens the whipped egg whites.
- Confectioners’ sugar: This sweetens the whipped cream topping without making it grainy.
- Chocolate shavings: These are optional, but they make the finished pie look bakery-worthy.
Substitutions and Variations
- Use a graham cracker crust: A graham cracker crust works well if you do not have chocolate cookies. The flavor will be less chocolatey, but still delicious.
- Use chocolate sandwich cookies: Chocolate sandwich cookies also work for the crust, though they will make it a little sweeter.
- Make it gluten-free: Use gluten-free chocolate sandwich cookies or gluten-free chocolate wafer cookies for the crust.
- Add a flavor boost: A pinch of cayenne or a little espresso powder can deepen the chocolate flavor.
- Change the topping: Finish the pie with chocolate shavings, Oreo crumbs, fresh berries, chocolate sauce, or caramel sauce.
How To Make Chocolate Mousse Pie
This no bake chocolate mousse pie is mostly an assemble-and-chill dessert, but a few simple details make a big difference.
- Top and garnish: Add whipped cream and finish with chocolate shavings before serving.
- Make the crust: Crush the chocolate cookies into fine crumbs, mix them with melted butter, and press the mixture firmly into a pie plate.
- Add the chocolate layer: Spread melted chocolate over the bottom of the crust, then chill until firm. This helps keep the crust from getting soggy.
- Make the chocolate mousse: Melt the chocolate until smooth, whip the cream, whip the egg whites, and gently fold everything together.
- Fill the crust: Spoon the chocolate mousse into the chilled crust and spread it into an even layer.
- Chill until set: Refrigerate the pie until the mousse is firm enough to slice cleanly.
Kellie’s Tips for the Best Chocolate Mousse Pie
- Melt the chocolate completely: The chocolate should be fully melted and smooth before it is folded into the mousse. If it is not melted enough, it can create small specks in the filling.
- Use good-quality chocolate: Since chocolate is the main flavor, better chocolate gives the pie a smoother texture and richer taste.
- Fold gently: Use a light hand when folding the whipped cream and egg whites into the chocolate so the mousse stays fluffy.
- Chill long enough: The pie needs time to set before slicing. Overnight chilling gives the cleanest slices.
- Use a warm knife: Dip a sharp knife in hot water, wipe it dry, then slice for neater pieces.
- Let it sit before slicing: If the chocolate layer on the crust is very firm, let the pie sit at room temperature for about 20–30 minutes before slicing.
Why Is the Chocolate Layer Hard to Slice?
The thin chocolate layer helps protect the cookie crust from becoming soggy, but it can firm up in the refrigerator. If the pie is difficult to slice, let it sit at room temperature for about 20–30 minutes before cutting. A sharp knife warmed in hot water will also help you slice cleanly through the chocolate layer. This tip also addresses a reader concern from the comments, where the author recommended resting the pie and using a warm knife for easier slicing.
How to Make in Advance
This chocolate mousse pie is a great make-ahead dessert. You can prepare the mousse-filled pie up to 2 days in advance and keep it covered in the refrigerator. For the freshest look and texture, add the whipped cream topping and chocolate shavings closer to serving.
Can You Freeze Chocolate Mousse Pie?
Yes, chocolate mousse pie freezes well if you freeze it before adding the whipped cream topping.
- Assemble the pie without the whipped cream.
- Wrap the pie tightly with plastic wrap.
- Cover with foil.
- Freeze for up to 2 months.
- Thaw in the refrigerator for 24 hours.
- Add whipped cream and chocolate shavings before serving.
How to Store Chocolate Mousse Pie
Store leftover chocolate mousse pie covered in the refrigerator for up to 48 hours. Keep the pie chilled until shortly before serving so the mousse stays firm and sliceable.
If the chocolate layer on the crust feels too firm, let the pie sit at room temperature for a few minutes before slicing. For the cleanest slices, use a sharp knife dipped in hot water and wiped dry.
More Easy Pie Recipes
If you love easy make-ahead pies, try these reader-favorite pie recipes next:
- Easy Frozen Mudslide Pie Recipe
- Deep Dish Pumpkin Pie
- The VERY BEST Apple Pie
- How to make the BEST Pie Crust
- Fresh Strawberry Pie Recipe
- No Bake Banana Split Pie
- Classic Double Crust Cherry Pie
Want even more easy recipe inspiration? Follow us over on Instagram!
Chocolate Mousse Pie Recipe
Equipment
- 1 hand mixer
- 1 9-inch pie plate
- mixing bowls
- Double boiler or heat-proof bowl and saucepan
- food processor or blender
- spatula
Ingredients
For the Crust
- 9 ounces chocolate wafer cookies, crushed into fine crumbs (Oreo thins or your favorite chocolate cookie works well, too.)
- 5 tablespoons salted butter, melted
- 6 ounces semi sweet chocolate, melted
For the Chocolate Mousse
- 6 ounces semisweet chocolate, broken into 1/2-ounce pieces
- 1 1/2 cups heavy cream
- 3 egg whites
- 2 tablespoons sugar
For the Whipped topping
- 1/4 cup confectioners sugar
- 1 cup heavy cream
- chocolate shavings, for garnish
Instructions
For the Crust
- In a medium bowl, stir together the cookie crumbs and butter until moistened. Press the mixture evenly into a 9 inch deep dish pie plate being sure to coat the bottom and the sides. Refrigerate for 30 minutes.
- Spread the melted chocolate evenly over the bottom of the crust and refrigerate until firm, approximately 5-10 minutes.
For the Chocolate Mousse Filling
- Heat 1-inch of water in the bottom half of a double boiler over medium heat. Place 6-ounces of semisweet chocolate in the top half of the double boiler. Tightly cover the top with film wrap.
- Allow the chocolate to melt slowly, about 9 to 10 minutes.
- Remove from the heat and stir until smooth keep at room temperature until needed.
- Place 1 1/2 cups heavy whipping cream in the well-chilled bowl of an electric mixer fitted with a well-chilled balloon whip.
- Whisk on high speed until peaks form, about 1 minute. Set aside for a few minutes until needed.
- Whisk 3 egg whites in a large stainless-steel bowl, until soft peaks form, about 3 minutes. Add 2 tablespoons sugar and continue to whisk until stiff peaks form, about 2 to 2 1/2 minutes.
- Add a 1/4 of the whipped cream to the chocolate and whisk quickly, vigorously, and thoroughly, then add to the egg whites. Now add the remaining whipped cream.
- Fold all together gently but thoroughly.
- Pour the chocolate mousse filling into the pie crust and spread evenly. Return the pie to the refrigerator and chill for 1 hour or overnight.
For the Whipped Cream Topping
- In a medium bowl, beat the confectioners’ sugar and cream together with an electric mixer until stiff peaks form.
- Spread the whipped cream over the top of the pie.
- Garnish with chocolate shavings, if desired.
- Chill for 30 minutes or overnight.
- Slice with a sharp knife warmed in hot water to make slicing easier.
Notes
- Chocolate Mousse Pie can be made up to 48 hours in advance. Cover and refrigerate until ready to serve.
- For the cleanest slices, dip a sharp knife in hot water, wipe it dry, then slice.
- If the chocolate layer on the crust is very firm, let the pie sit at room temperature for 20–30 minutes before slicing.
- A graham cracker crust can be used instead of the chocolate cookie crust.
- For a gluten-free version, use gluten-free chocolate sandwich cookies or gluten-free chocolate wafer cookies.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Yes. This pie is a great make-ahead dessert. You can make it the night before and keep it covered in the refrigerator until you are ready to serve.
Yes. A graham cracker crust works as a substitute for the chocolate cookie crust. The flavor will be less chocolatey, but it will still pair well with the mousse filling. A reader asked about this swap in the comments, and the author confirmed that graham cracker crust works well.
Yes. Use gluten-free chocolate sandwich cookies or gluten-free chocolate wafer cookies for the crust. Check all ingredient labels to make sure they are gluten-free.
The chocolate may not have been melted completely, or it may have cooled too much before being folded into the mousse. Use good-quality chocolate and make sure it is smooth before combining it with the whipped cream and egg whites.
Let the pie sit at room temperature for 20–30 minutes if the chocolate layer is very firm. Then slice with a sharp knife dipped in hot water and wiped dry.
Pasteurized egg whites can be used if you prefer them, but they may whip differently than fresh egg whites. Make sure they reach stiff peaks before folding them into the mousse.
I think I will use either a regular crust or graham cracker crust… I always put the graham crust in the oven for about 10 min to allow the butter to bake into the crust and it holds it together…. I dont get to town much but would have to buy the choc cookies/wafers to make it to this recipe but I find the graham crust usually does well as a substitute… Cant wait to make this…..
Chocolate sandwich cookies work well, too but are much sweeter. The graham cracker crust is a great substitution, as well.
Easy, flavorful, actually LOVE the mousse portion. Would not spread chocolate on crust again. It made it difficult to cut and very hard to eat. I didn’t see anywhere that the pie should sit out a bit but maybe I missed it. Will make it again but would not add chocolate over crust but would drizzle chocolate over slices.
Thank you for your feedback! We do leave it out on the counter for about 30 minutes before slicing as the chocolate does harden a bit making it tough to cut through. A warm knife does help with easing through the chocolate layer.
The filling is amazing. I didn’t make the crust, but I bet that’s good too! So easy, so delicious!
Hi Jen! Thank you so much! I’m so glad you enjoyed it. We like the filling on it’s own, too!
My pie looked nothing like this. I am an experienced baker/cook. The chocolate firms up into small specks and doesnt incorporate well. I would be interested to know how they achieved the pie in the pictures. Even the one they mixed up doesnt look the same. Taste is good.
It sounds like (and I’m just guessing because I wasn’t in your kitchen while you made it) you didn’t melt the chocolate enough OR you didn’t use a high quality chocolate. We have made this recipe so many times I lost count and it always turns out the same.
Can the pie itself be made the night before I need it?
Yes! It’s actually great for making in advance.
This pie was such a hot mess; not enough butter to hold the crust together, so the sides just crumbled. The melted chocolate on the bottom made it so rock hard, people we’re having to pick it up with their fingers and eat it like chocolate bark; chocolate/fudge sauce may have been better. The mousse was good, but used up more dishes and took more steps than another mousse recipe I prefer. The taste was great, but won’t be making this one again.
I’m so sorry you had difficulty making this pie. I’ve tested the recipe a number of times and never had an issue with the crust holding up, the chocolate being too thick to cut through or the mess of making a standard, classic mousse. I’ll retest again but many readers have made this pie with great success. The addition of using a hot fudge sauce does sound lovely but the regular melted chocolate is to keep the crust from getting soggy and falling apart.
This is one gorgeous pie Kellie! Who could resist a big slice of this chocolate creation … not me!
Thank you!
Made it this weekend and it was delish! I added a little cayenne pepper to the chocolate 🙂 I also only made thge mousse part and served it in glass dessert cups. Would definitely make it again. (Bought the pasteurized egg whites from Aldi)
Love the addition of the cayenne! And ALDI is a treasure trove of ingredients!