Embrace the irresistible flavors of autumn with this exquisite Keto Pumpkin Mousse Cake. This low-carb masterpiece is designed to captivate your senses, featuring a light and airy pumpkin mousse nestled atop a rich, sugar-free chocolate almond crust, all crowned with a delicate layer of homemade whipped cream. It’s the ultimate elegant fall dessert that perfectly balances indulgence with health-conscious eating, making it an ideal choice for anyone following a ketogenic diet or simply seeking a deliciously sugar-free treat.

Unveiling the Mousse Cake Experience
A mousse cake, at its heart, is a symphony of delicate textures and rich flavors, offering a distinct culinary experience that sets it apart from more conventional desserts. While it shares some similarities with a classic cheesecake, particularly in its layered construction and creamy base, the fundamental difference lies in its signature lightness. Unlike the dense, often heavy, cream cheese foundation of a cheesecake, mousse cakes boast an ethereal quality, thanks to the aerated texture of the mousse itself.

The concept of mousse, meaning “foam” in French, originated in France during the 19th century, traditionally featuring chocolate or fruit purees whipped to a light, foamy consistency. Over time, creative bakers and chefs began to elevate this simple yet luxurious dessert by pairing it with a supportive base, giving birth to the mousse cake. This ingenious combination transformed mousse from a standalone treat into a more substantial, multi-textured dessert that could be sliced and served with elegance.
Our Keto Pumpkin Mousse Cake truly embodies this sophisticated dessert tradition, meticulously crafted with three harmonious layers. It begins with a robust almond flour crust infused with rich cocoa, providing a sturdy yet tender foundation. This base supports a generous layer of luscious, spiced pumpkin mousse – creamy, yet wonderfully light and full of autumnal warmth. Finally, the cake is adorned with a cloud of freshly made, sugar-free whipped cream, adding a final touch of velvety smoothness and visual appeal. Each layer is designed to complement the others, creating a balanced and unforgettable flavor profile that is both decadent and surprisingly light.
The Keto Advantage: Indulging in Pumpkin Guilt-Free
Pumpkin, often considered the quintessential fall flavor, joyously fits within a ketogenic lifestyle, albeit with mindful moderation. While this vibrant orange gourd offers numerous health benefits and a naturally sweet earthiness, it does contain carbohydrates. However, when prepared thoughtfully, as in this Keto Pumpkin Mousse Cake, it transforms into a perfectly permissible and delectable low-carb ingredient. Each generous slice of this mousse cake contains approximately 6 grams of net carbs, making it an excellent choice for those adhering to a keto diet without sacrificing the pleasures of a seasonal dessert. For pumpkin enthusiasts and health-conscious individuals alike, this cake presents a fantastic opportunity to savor the flavors of autumn.

Beyond its low-carb count, this pumpkin mousse cake is a smart choice for families, offering a dessert that kids will adore. Its lighter, creamier texture is often preferred over the heavier consistency of traditional cheesecake, making it a hit with younger palates. Furthermore, it’s packed with healthy fats from ingredients like cream cheese and heavy whipping cream, along with protein from the almond flour, contributing to satiety and providing sustained energy – a stark contrast to sugar-laden alternatives.
A key ingredient in achieving the perfect keto-friendly sweetness and texture across all three layers is Swerve Confectioner’s Sugar Substitute. This erythritol-based sweetener is a game-changer for low-carb baking. Its fine, powdery consistency ensures that it dissolves seamlessly, preventing any undesirable grainy textures that can often plague sugar-free desserts. In the crust, Swerve helps achieve a delightful lightness; in the mousse, it contributes to its rich, thick creaminess; and in the whipped cream, it aids in whipping up to stiff peaks, creating a stable and luscious topping. It’s the secret weapon that allows this cake to taste truly indulgent without the sugar crash or carb overload.
Preparation and Storage for Your Pumpkin Mousse Perfection
Patience is a virtue, especially when it comes to crafting a flawless mousse cake. After assembling, this Keto Pumpkin Mousse Cake requires a minimum of four hours of chilling time in the refrigerator before it is ready to be served. This crucial resting period allows the mousse layers to firm up completely, ensuring that each slice holds its elegant shape beautifully and offers the optimal creamy texture. The waiting is certainly worth it, as a well-chilled mousse cake is infinitely easier and more satisfying to slice and serve. This requirement also makes it an ideal dessert to prepare ahead of time, freeing you up to enjoy your guests or other holiday preparations.

Proper storage is essential to maintain the freshness and quality of your homemade pumpkin mousse cake. Once chilled, cover the cake loosely with aluminum foil or a lid to prevent it from drying out or absorbing refrigerator odors, and store it in the refrigerator for up to three days. This allows you to enjoy its delightful flavors over several days, making it perfect for lingering holiday celebrations or simply satisfying your sweet cravings throughout the week.
For even longer preservation, this versatile Keto Pumpkin Mousse Cake can be frozen. To freeze, ensure it is completely sealed in an airtight container or wrapped tightly with plastic wrap and then aluminum foil to prevent freezer burn. Stored correctly, it can last in the freezer for up to six months. When you’re ready to enjoy it again, simply transfer the frozen cake to the refrigerator and allow it to thaw overnight. This slow thawing process ensures the mousse retains its creamy consistency, ready to be sliced and savored just as if it were freshly made.
The Foundation: Crafting the Perfect Keto Almond Flour Crust
The base of any exceptional mousse cake is its crust, and for our keto version, a gluten-free almond flour crust provides the ideal foundation. It’s imperative to use blanched almond flour, not almond meal, for this recipe. The distinction is crucial for achieving the desired texture. Almond flour is made from blanched almonds that have had their skins removed before being finely ground, resulting in a smooth, light powder. Almond meal, on the other hand, is made by grinding whole almonds, including their skins, which gives it a coarser, more rustic texture and can result in a grainy crust. Using almond flour ensures a beautifully tender, cohesive, and refined crust that melts in your mouth without any unwelcome grittiness.

This chocolate almond flour crust isn’t just a perfect partner for pumpkin mousse; it’s incredibly versatile and can elevate a variety of other low-carb desserts. Imagine this rich, sugar-free chocolate crust serving as the base for a vibrant keto cheesecake or a creamy peanut butter pie. Its deep chocolate flavor provides a wonderful contrast to many fillings, enhancing the overall dessert experience. The pairing of chocolate and pumpkin is a classic for a reason – the slightly bitter notes of cocoa perfectly complement the sweet and earthy tones of pumpkin. This harmonious combination is a favorite of mine and was previously featured in my popular keto pumpkin chocolate chip cookies, proving its timeless appeal and delicious versatility.
Elevating Your Dessert: Keto Pumpkin Mousse Cake for Any Occasion
The beauty of this Keto Pumpkin Mousse Cake extends beyond its delightful taste and keto-friendly profile; it also offers incredible versatility in presentation and serving. While a full-sized cake is a showstopper, consider making individual portions in mini pie plates or small ramekins, similar to how I prepared my mini strawberry pies. This not only aids in portion control but also adds an elegant touch, making each serving feel special and allowing for easy distribution at gatherings.

Whether served as a sophisticated after-dinner dessert or as a centerpiece on a lavish dessert table at a family dinner or holiday feast, this cake is guaranteed to impress. Its stunning visual appeal, with distinct layers and a smooth, creamy finish, makes it a proud offering for any fall party or special occasion. To truly make it your own and add a personalized flair, consider various keto-friendly garnishes. A sprinkle of sugar-free chocolate shavings adds texture and an extra hint of cocoa richness. A delicate drizzle of sugar-free caramel sauce can elevate the flavors, introducing a buttery sweetness. You could also experiment with a dusting of pumpkin pie spice, a few candied pecans (sweetened with keto-friendly erythritol), or even fresh cranberries for a pop of color and tartness. The possibilities are endless, allowing you to tailor this elegant dessert to perfectly match your taste and the occasion.
Keto Pumpkin Mousse Cake Recipe
Here are the detailed ingredients and step-by-step instructions to create this irresistibly delicious Keto Pumpkin Mousse Cake. Please note that the exact measurements for each component are designed to yield a perfectly balanced flavor and texture. Follow these simple steps for a dessert that’s sure to impress!
Prep Time: 30 minutes
Cook Time: 0 minutes
Resting Time: 4 hours
Total Time: 4 hours 30 minutes
Servings: 14 people
Net Carbs: 6 net carbs per serving
Calories: 225 kcal
Ingredients
Chocolate Crust
- 1 1/4 cup Almond Flour
- 3 tbsp Unsweetened Cocoa Powder
- 2 tbsp Butter, melted
- 1/4 cup Swerve Confectioner’s Sugar Substitute
- 1/2 tsp Vanilla Extract
Pumpkin Layer
- 16 ounce Cream Cheese, softened
- 1 can Organic Unsweetened Pumpkin Puree
- 1 1/2 tsp Pumpkin Pie Spice
- 1 1/2 cups Heavy Whipping Cream
- 1 tsp Vanilla Extract
- 1/2 cup Swerve Confectioner’s Sugar Substitute
Whipped Cream Topping
- 1 cup Heavy Whipping Cream
- 1 tsp Vanilla Extract
- 1/3 cup Swerve Confectioner’s Sugar Substitute
Instructions
Combine all ingredients for the crust in a mixing bowl. Blend thoroughly until a stiff, uniform dough is formed. The dough should be pliable but firm.

Lightly grease an 8-inch springform pan. Press the prepared dough evenly into the bottom of the pan to create a firm, even crust. Ensure it extends slightly up the sides for a clean edge.

Place the crust in the refrigerator to chill while you prepare the pumpkin mousse filling. Chilling helps the crust set.

In a separate mixing bowl, beat together the softened cream cheese and 1/2 cup of Swerve Confectioner’s Sugar Substitute until the mixture is smooth and creamy with no lumps.

Add the remaining filling ingredients (pumpkin puree, pumpkin pie spice, heavy whipping cream, and vanilla extract) to the cream cheese mixture. Beat until all ingredients are well combined and the filling is smooth and free of lumps, achieving a thick, creamy consistency.

Evenly spread the pumpkin mousse filling over the chilled chocolate crust in the springform pan. Use a spatula to smooth the top surface.

For the topping, place the heavy whipping cream, vanilla extract, and 1/3 cup of Swerve Confectioner’s Sugar Substitute into a clean mixing bowl. Beat on high speed until soft peaks form. Be careful not to overbeat.

Gently spread the whipped cream topping over the pumpkin mousse layer in the pan. Create swirls or decorative patterns if desired. Chill the assembled cake for a minimum of 4 hours before serving to allow all layers to set properly. This ensures easy slicing and the best texture.

Recipe Notes
Calories: 225 kcal
Net Carbs: 6 Net Carbs Per Serving
The nutritional information for this recipe is calculated as a courtesy and is an approximate only. We cannot guarantee the absolute accuracy of the nutritional information for any recipes on this site.
Pin this recipe for later and share it with your friends! This Keto Pumpkin Mousse Cake is too good not to share.

Follow us on Pinterest for more delicious keto recipes and inspiration!
More Irresistible Keto Desserts to Explore
If you fell in love with this delightful Keto Pumpkin Mousse Cake, you’re in for a treat! We have a treasure trove of other fantastic keto dessert ideas that are just waiting to be made. Each recipe is crafted to be easy to follow, rich in healthy fats and protein, and so incredibly delicious that even the pickiest eaters (including kids!) will ask for more. Expand your low-carb dessert repertoire with these amazing recipes:
- Keto Pancake Mix Cinnamon Donuts: A delightful twist on a classic, perfect for a keto breakfast or treat.
- Keto Oreo Cookies: Recreate your favorite childhood cookie, but make it low-carb and guilt-free.
- Coconut Keto Clusters: Simple, crunchy, and packed with tropical flavor, these clusters are a quick keto snack.
- Keto Lemon Sandwich Cookies: Bright, zesty, and utterly refreshing, these cookies are a burst of sunshine.
- Keto Strawberry Lemon Blondies: A perfect combination of sweet strawberries and tangy lemon in a chewy blondie format.








