Cadbury Flake Mousse Tart Recipe
The Cadbury Flake Mousse Tart is pure dessert magic: a showstopping treat where lush chocolate mousse meets a crisp, buttery crust, all crowned with shards of iconic Cadbury Flake. This is more than just another chocolate tart — it’s an embrace for every chocoholic’s soul. Whether you’re serving at a special occasion or making an ordinary weekend feel extraordinary, every forkful brings creamy mousse, the gentle crunch of chocolate cookies, and that unmistakable Flake melt-in-your-mouth finish.

Ingredients You’ll Need
You won’t believe how uncomplicated the ingredients for this Cadbury Flake Mousse Tart are! Each component has a starring role, working together to build irresistible layers of flavor, gorgeous visuals, and a cloud-like texture you’ll be obsessed with.
- Chocolate cookie crumbs: These create the ultimate foundation with a punch of chocolatey crunch—go for Oreos, chocolate digestives, or even graham crackers if you’re feeling creative.
- Unsalted butter (melted): Butter binds the crust, making it rich, decadent, and perfectly sliceable.
- Cadbury Flake bars: The heart of this recipe; their signature airy texture melts into the mousse and adds the perfect chocolatey finish on top.
- Heavy cream (chilled): The secret to a mousse that’s light, fluffy, and utterly dreamy—make sure it’s cold for those perfect peaks!
- Powdered sugar: Adds gentle sweetness without any grittiness, giving the mousse its smooth, luscious flavor.
- Vanilla extract: Just a hint rounds out the chocolate, adding warmth and a bakery-quality aroma.
- Extra Cadbury Flake pieces for topping: The ultimate finishing touch: a visual treat and burst of authentic Cadbury magic in every bite.
How to Make Cadbury Flake Mousse Tart
Step 1: Make the Chocolate Cookie Crust
Start by preheating your oven to 350°F (175°C). In a medium bowl, mix your chocolate cookie crumbs with the melted butter until every crumb looks like it’s been kissed by butter and the mixture resembles damp sand. Press it into the bottom and up the sides of a 9-inch tart pan, compacting firmly. This crust bakes for 8–10 minutes to bring out deep cocoa flavors before cooling to create the base for your Cadbury Flake Mousse Tart.
Step 2: Prep the Cadbury Flake Bars
While the crust cools off and tempts you with chocolatey aromas, take your Cadbury Flake bars and crumble them into small, flaky pieces. This step is honestly a bit of joy—those delicate ripples turn into magic when folded into mousse!
Step 3: Whip Up the Chocolate Mousse
In a large mixing bowl, pour in the chilled heavy cream. Beat with a hand mixer (or stand mixer) until soft peaks begin to form. Gradually whisk in the powdered sugar and vanilla extract. The cream should look pillowy and cloud-like, ready to cradle your Cadbury Flake pieces. Gently fold in the crumbled Flake bars, being careful not to knock out all the air—it’s that delicate fold that keeps your mousse so fluffy.
Step 4: Assemble the Tart
Spoon the Flake-infused mousse into your cooled tart shell, smoothing the top with an offset spatula or the back of a spoon. The aim: a heavenly, fluffy layer brimming with melted Flake chocolate, nestled in a crisp crust.
Step 5: Chill Until Dreamy
The hardest part: patience! Chill your Cadbury Flake Mousse Tart in the refrigerator for at least 2 hours (overnight works too if you’re prepping ahead), so the mousse sets and the flavors meld beautifully.
Step 6: Decorate Like a Pro
Just before serving, scatter extra Cadbury Flake pieces over the top for dramatic effect and extra chocolatey crunch. If you like, add a drizzle of melted chocolate or a dusting of cocoa powder for even more wow-factor!
How to Serve Cadbury Flake Mousse Tart

Garnishes
For a picture-perfect finish, top your tart with generous shards of Cadbury Flake, a sprinkle of powdered sugar, or even some edible gold leaf if you’re feeling fancy. A little contrast—try some fresh berries or a sprig of mint—makes those deep chocolate tones pop and adds brightness with every bite.
Side Dishes
The Cadbury Flake Mousse Tart is so decadent it’s happiest with subtle sides: think a dollop of barely sweetened whipped cream, a bowl of fresh raspberries, or a scoop of vanilla bean ice cream. Even a small cup of strong espresso or black coffee will cut through the richness and balance every bite.
Creative Ways to Present
Mini tarts, tartlets, or layered dessert glasses can give this classic a modern twist—ideal for parties or an elegant afternoon tea. Use cookie cutters to create fun shapes from the crust if you’re serving kids (or unleashing your inner kid!). You can even serve in deconstructed layers for a showy plated dessert.
Make Ahead and Storage
Storing Leftovers
Cover any remaining Cadbury Flake Mousse Tart tightly with plastic wrap or store it in an airtight container in the fridge. It’ll keep perfectly for up to three days, and some say the flavors get even dreamier on day two!
Freezing
You can freeze the assembled tart, but for best texture, do so before garnishing with extra Flake pieces. Wrap well in plastic and foil, freeze for up to one month, then thaw overnight in the fridge. Garnish after thawing for that signature Flake crunch.
Reheating
No reheating needed—this tart is all about that cool, creamy mousse! If you prefer a slightly softer mousse, let your slice sit at room temperature for a few minutes before digging in.
FAQs
Can I use a different type Dessert
If Flake bars are elusive, you can substitute with any airy chocolate or even a mix of finely crumbled milk chocolate and a touch of chocolate shavings—though the true Cadbury Flake Mousse Tart experience comes from those iconic bars!
Do I have to bake the crust, or can I do a fully no-bake version?
Baking the crust gives it that wonderful crispness and holds everything together, but if you’re short on time, a no-bake crust works—just make sure you chill it extra well so it stays firm.
What can I use instead of heavy cream?
To keep the mousse luxuriously light, heavy cream is best, but you can experiment with coconut cream for a dairy-free twist—just ensure it’s well chilled and whipped until fluffy.
Can I make this Cadbury Flake Mousse Tart ahead for a party?
Absolutely! It’s the ultimate make-ahead dessert. Assemble the day before, chill overnight, and add the final Flake garnish just before serving for maximum wow-factor.
How do I get clean, bakery-worthy slices?
For neat slices, chill the tart thoroughly, then use a sharp knife dipped in hot water (wipe between cuts). This helps glide through the set mousse and crust without crumbling.
Final Thoughts
Trust me, the Cadbury Flake Mousse Tart is a dessert that brings out pure chocolate joy—effortless to make, dazzling to serve, and utterly unforgettable to eat. Gather your Flake bars and make this treat for your next sweet occasion; you’ll be the hero of any dessert table!
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Cadbury Flake Mousse Tart Recipe
- Total Time: 2 hours 30 minutes
- Yield: 10 servings 1x
- Diet: Vegetarian
Description
Indulge in the decadent richness of this Cadbury Flake Mousse Tart. A buttery chocolate cookie crust filled with a light and airy mousse made with crumbled Cadbury Flake bars, topped with more Flake pieces for a delightful texture. This no-bake dessert is a chocolate lover’s dream!
Ingredients
For the Crust:
- 1 1/2 cups chocolate cookie crumbs
- 5 tablespoons unsalted butter, melted
For the Mousse:
- 200g Cadbury Flake bars (about 5 bars)
- 1 cup heavy cream, chilled
- 1/4 cup powdered sugar
- 1/2 teaspoon vanilla extract
- Extra Cadbury Flake pieces for topping
Instructions
- Preheat the oven: Preheat the oven to 350°F (175°C).
- Prepare the crust: Mix chocolate cookie crumbs with melted butter, press into a tart pan, and bake for 8-10 minutes. Let cool.
- Prepare the mousse: Crumble Cadbury Flake bars. Whip cream with sugar and vanilla until soft peaks form. Fold in crumbled Flake bars.
- Assemble the tart: Spoon mousse into the crust, smooth the top, and chill for at least 2 hours.
- Serve: Garnish with extra Flake pieces before serving.
Notes
- This tart is best served chilled.
- For a richer flavor, drizzle melted chocolate over the top or mix cocoa powder into the crust.
- Prep Time: 20 minutes
- Cook Time: 10 minutes
- Category: Dessert
- Method: No-Bake + Baking
- Cuisine: British
Nutrition
- Serving Size: 1 slice
- Calories: 310
- Sugar: 20g
- Sodium: 160mg
- Fat: 22g
- Saturated Fat: 13g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 27g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 55mg