“Did you catch the latest dessert trend?” I overheard a friend say at a gathering as I rushed into the kitchen, eager to delight everyone with my latest creation—the Vegan No-Bake Blackberry Mousse Tart. With a luscious mousse filling and a crunchy Oreo crust, this dessert is not just a sweet treat; it’s a stunning centerpiece that takes only 10 minutes to whip up! Ideal for anyone looking for a quick yet impressive dessert, it’s entirely dairy-free and egg-free, proving that you don’t need to sacrifice flavor for a healthier option. What’s more, this tart is a versatile joy—feel free to swap blackberries for strawberries or raspberries for a twist! Ready to see how easy it is to bring pure indulgence to your next gathering? Let’s dive into this delightful recipe!

Why Is This Tart a Must-Try?
Effortless Preparation: Just 10 minutes is all you need to create this show-stopping dessert!
Vegan Delight: It’s completely dairy-free and egg-free, ensuring everyone can enjoy a slice without compromising on taste.
Flavor Versatility: Feel free to substitute berries; this tart can be customized with strawberries or raspberries for fresh twists.
Gourmet Experience: The creamy mousse paired with a crunchy Oreo crust delivers a decadent texture that rivals any gourmet dessert.
Perfect for Any Occasion: Whether it’s a dinner party or a casual get-together, this tart will impress your guests and become a crowd favorite!
Ready to get creative? Pair your tart with some homemade Pistachio Blackberry Olive sauce for an extra layer of flavor!
No-Bake Blackberry Mousse Tart Ingredients
• Dive into this scrumptious recipe with ingredients that bring your tart to life!
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For the Crust
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Oreo Cookies (320g) – Perfect for a sweet and sturdy base; feel free to substitute with any creamy-filled cookie.
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Vegan Butter (1/3 cup or 80g) – Melting this binds your crust together like a dream, making it easier to mix.
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For the Mousse Filling
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Blackberries & Blueberries (8 oz or 225g total) – The star flavors of this mousse; swap for any preferred berries for a delicious twist.
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Non-Dairy Cream Cheese (1 cup or 225g) – Adds a rich creaminess; can be switched with drained yogurt or conventional cream cheese for a non-vegan version.
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Sugar (1/3 cup or 75g) – Sweetens the tart to counterbalance the tartness of the berries; adjust as needed based on berry types.
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Vanilla Extract (2 tsp) – This classic flavor enhancer elevates your creation; alternatives can also work for a twist.
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Non-Dairy Whipping Cream (1 cup or 240ml) – Whipped to airy perfection for that luxurious mousse texture; remember, chilling is key!
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Non-Dairy Milk (1/4 cup or 60ml) – Used to prepare agar-agar; any plant milk works wonders here.
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Agar-Agar Powder (1 tsp) – This vegan gelling agent is essential for firming up your mousse; gelatin is an option for non-vegan variations.
Get ready to indulge in the creamy, luscious delight of this No-Bake Blackberry Mousse Tart!
Step‑by‑Step Instructions for No-Bake Blackberry Mousse Tart
Step 1: Prepare the Crust
Crush the Oreo cookies into fine crumbs using a food processor for a smooth base. Melt the vegan butter and combine it with the crumbs in a bowl until evenly mixed. Press this mixture firmly into the bottom and up the sides of a tart pan, ensuring a compact layer. Place the crust in the freezer for 15 minutes to set while you prepare the mousse.
Step 2: Make the Mousse Filling
In a blender, puree the blackberries and blueberries until smooth, adding a touch of sweetness if desired. For a seedless mousse, strain this mixture through a fine mesh sieve. In a mixing bowl, combine the berry puree with vegan cream cheese, sugar, and vanilla extract, blending until creamy and uniform—this delightful mixture forms the base of your No-Bake Blackberry Mousse Tart.
Step 3: Whip the Cream
In a separate bowl, use an electric mixer to whip the chilled non-dairy cream until stiff peaks form, taking about 3-5 minutes. Once whipped, gently fold the cream into the berry-cream cheese mixture until well combined, being careful not to deflate the whipped cream, which adds a light and airy texture to your mousse filling.
Step 4: Prepare Agar-Agar
In a small saucepan, combine the agar-agar powder with the non-dairy milk and bring to a gentle boil over medium heat, stirring continuously for about 2-3 minutes until the mixture thickens slightly and is dissolved. Allow it to cool for a few minutes before incorporating into the mousse mixture to ensure a smooth blend.
Step 5: Combine
Fold the cooled agar-agar mixture into the berry mousse, mixing gently until fully combined. Be cautious not to overmix, as you want to keep the airy texture of the whipped cream intact. This step is crucial for ensuring the mousse sets beautifully in the No-Bake Blackberry Mousse Tart.
Step 6: Assemble Tart
Remove the crust from the freezer and pour the mousse filling into it, smoothing the top with a spatula for an even finish. Cover the tart with plastic wrap and place it in the refrigerator to chill for at least 4 hours, or overnight is even better to allow it to firm up perfectly.
Step 7: Serve and Decorate
Once set, carefully unmold the tart from the pan. To enhance its presentation, top it with fresh berries, a sprinkle of chocolate shavings, or whipped coconut cream. Slice and serve your stunning No-Bake Blackberry Mousse Tart chilled, delighting your family and friends with this effortless and vibrant dessert.

What to Serve With Vegan No-Bake Blackberry Mousse Tart
Elevate your dessert experience by pairing this creamy delight with fabulous side dishes and drinks that complement its fruity flavors.
- Fresh Berries: A bed of mixed fresh strawberries, blueberries, and raspberries adds brightness, providing a refreshing contrast to the rich mousse.
- Coconut Whipped Cream: Dollops of airy coconut whipped cream enhance the tart’s creaminess and infuse a delightful tropical twist in every bite.
- Mint Leaves: Fresh mint leaves not only add a pop of color but their cool, aromatic flavor lifts the dessert’s overall taste.
- Chocolate Drizzle: A silky drizzle of dark chocolate sauce offers a touch of indulgence, appealing to chocolate lovers craving richness alongside the berry tart.
Serve your tart chilled, perhaps with a glass of sparkling water infused with lemon or a fruity sangria. Each bite promises a beautiful blend of flavors, perfect for those summer gatherings or cozy family meals.
Expert Tips for No-Bake Blackberry Mousse Tart
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Chill Your Ingredients: Ensure the non-dairy whipping cream is well-chilled; this helps achieve the best airy texture in your mousse.
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Avoid Crust Crumbliness: For a firmer crust, lightly bake the crust for 5-6 minutes at 350°F (175°C). This step adds stability and flavor.
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Strain Berries: If you prefer a smooth mousse, strain the blended berries to remove seeds, creating an elegant final result that’s pleasing to the palate.
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Manage Agar-Agar: Be cautious when mixing the agar-agar; gently reheat if any lumps form, and mix with the berry puree while warm to ensure even consistency.
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Taste and Adjust: The sweetness of the tart can vary depending on the tartness of your chosen berries, so taste and adjust the sugar to maintain perfect balance!
Storage Tips for No-Bake Blackberry Mousse Tart
- Fridge: Keep the tart in an airtight container in the refrigerator for optimal freshness, consuming it within 2-3 days. The creamy mousse will maintain its delightful texture.
- Freezer: Avoid freezing the No-Bake Blackberry Mousse Tart, as this can alter the mousse’s texture, making it grainy and less enjoyable.
- Reheating: There’s no need to reheat this dessert; simply serve it chilled for the best experience. It’s perfect for making ahead of time for gatherings!
Make Ahead Options
These Vegan No-Bake Blackberry Mousse Tarts are perfect for meal prep, saving you valuable time on busy weeknights! You can prepare the crust and the mousse filling up to 24 hours in advance. For the crust, make it and store it covered in the refrigerator to keep it fresh. The mousse filling can be prepared and stored separately; cover it tightly to prevent any air exposure. When ready to serve, pour the mousse into the chilled crust and refrigerate for at least 4 hours (or preferably overnight) to ensure it sets perfectly. This way, you’ll enjoy a stunning, creamy dessert that’s just as delicious as when freshly made—ideal for impressing family or guests!
No-Bake Blackberry Mousse Tart Variations
Get ready to personalize this delightful dessert with some simple swaps to suit your taste!
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Berry Bliss: Swap blackberries and blueberries for fresh strawberries or raspberries for a sweet spin. Strawberries add a delightful tanginess that pairs beautifully with the creamy mousse.
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Nutty Twist: Add crushed almonds or walnuts as a topping for a crunchy texture. Not only does it enhance the flavor, but it also adds a nutritious boost.
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Citrus Burst: Incorporate lemon or orange zest in the filling for a zesty twist. This bright flavor will elevate your mousse and make it even more refreshing!
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Chocolate Indulgence: Drizzle melted dark chocolate on top for an indulgent touch. Chocolate and berries are a match made in heaven, bringing out the rich flavors of both ingredients.
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Sweetener Swap: Use maple syrup or agave nectar instead of sugar for a natural sweetener option. Adjust the amount based on your preferred level of sweetness.
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Creamy Upgrade: For an ultra-creamy version, replace the non-dairy cream cheese with a cashew cream base. Simply soak cashews and blend until smooth for extra richness.
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Spiced Sensation: Add a pinch of cinnamon or nutmeg into the filling for a warm spice note. This aromatic touch can transform your tart into a cozy delight perfect for any season.
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Saucy Addition: Serve with a tangy Pistachio Blackberry Olive sauce to drizzle on top. This will enhance the flavor profile and wow your guests with something unique!
Feel free to experiment with these variations to create your signature spin on this scrumptious tart, making it truly yours!

No-Bake Blackberry Mousse Tart Recipe FAQs
How do I select ripe blackberries for the mousse?
Absolutely! Choose blackberries that are plump, firm, and deep purple in color. They should have a glossy appearance and a slight give when gently squeezed. Avoid any berries that have dark spots or are overly soft, as these might be overripe.
What’s the best way to store the No-Bake Blackberry Mousse Tart?
I recommend storing the tart in an airtight container in the refrigerator. It’ll stay fresh for about 2-3 days. Just cover it well to prevent it from absorbing other smells. This ensures that the mousse maintains its creamy texture!
Can I freeze the No-Bake Blackberry Mousse Tart?
Although it’s tempting, I suggest not freezing this tart, as the mousse’s texture may become grainy once thawed. If you’re looking to prepare it ahead of time, simply keep it in the refrigerator and enjoy within a couple of days.
Why is my mousse not setting properly?
Very! If your mousse isn’t setting, it’s likely due to the agar-agar not being activated correctly. Make sure to mix it with non-dairy milk and bring it to a gentle boil, stirring continuously, as per the package instructions. If lumps appear, gently reheat and stir to dissolve completely before folding it into the mousse mixture.
Are there any dietary restrictions I should be aware of?
Yes! This No-Bake Blackberry Mousse Tart is vegan, dairy-free, and egg-free, making it suitable for many dietary restrictions. Always check that the specific brands of cream cheese, whipping cream, and milk are free from allergens, especially if you have individuals with nut allergies or soy intolerances.
Can I use different types of berries for the mousse?
Absolutely! The more the merrier! This recipe is very flexible; you can substitute blackberries and blueberries with strawberries, raspberries, or even a mix of your favorites for a delightful twist, adjusting the sugar based on the sweetness of your chosen berries.

Irresistible No-Bake Blackberry Mousse Tart to Savor Now
Ingredients
Equipment
Method
- Crush the Oreo cookies into fine crumbs using a food processor for a smooth base. Melt the vegan butter and combine it with the crumbs in a bowl until evenly mixed. Press this mixture firmly into the bottom and up the sides of a tart pan, ensuring a compact layer. Place the crust in the freezer for 15 minutes to set while you prepare the mousse.
- In a blender, puree the blackberries and blueberries until smooth, adding a touch of sweetness if desired. For a seedless mousse, strain this mixture through a fine mesh sieve. In a mixing bowl, combine the berry puree with vegan cream cheese, sugar, and vanilla extract, blending until creamy and uniform—this delightful mixture forms the base of your No-Bake Blackberry Mousse Tart.
- In a separate bowl, use an electric mixer to whip the chilled non-dairy cream until stiff peaks form, taking about 3-5 minutes. Once whipped, gently fold the cream into the berry-cream cheese mixture until well combined, being careful not to deflate the whipped cream, which adds a light and airy texture to your mousse filling.
- In a small saucepan, combine the agar-agar powder with the non-dairy milk and bring to a gentle boil over medium heat, stirring continuously for about 2-3 minutes until the mixture thickens slightly and is dissolved. Allow it to cool for a few minutes before incorporating into the mousse mixture to ensure a smooth blend.
- Fold the cooled agar-agar mixture into the berry mousse, mixing gently until fully combined. Be cautious not to overmix, as you want to keep the airy texture of the whipped cream intact. This step is crucial for ensuring the mousse sets beautifully in the No-Bake Blackberry Mousse Tart.
- Remove the crust from the freezer and pour the mousse filling into it, smoothing the top with a spatula for an even finish. Cover the tart with plastic wrap and place it in the refrigerator to chill for at least 4 hours, or overnight is even better to allow it to firm up perfectly.
- Once set, carefully unmold the tart from the pan. To enhance its presentation, top it with fresh berries, a sprinkle of chocolate shavings, or whipped coconut cream. Slice and serve your stunning No-Bake Blackberry Mousse Tart chilled, delighting your family and friends with this effortless and vibrant dessert.

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