Keto Peanut Butter Mousse
Peanut butter lovers, rejoice! This Keto Peanut Butter Mousse is the dessert of your dreams. It’s rich, creamy, and utterly delicious—perfect for any occasion, from casual family dinners to elegant dinner parties. The best part? It’s completely sugar-free! Your guests will be amazed by how indulgent it tastes while keeping you in line with your keto lifestyle.
Why You’ll Love This Recipe
- Quick Preparation: This mousse takes just 5 minutes to whip up, making it an ideal last-minute dessert.
- Rich Flavor: The combination of peanut butter and mascarpone creates a luscious taste that satisfies cravings.
- Versatile Serving Options: Enjoy it on its own or dress it up with toppings like low-carb biscuits or extra peanut butter.
- Low Carb Delight: With only 2.9 g of carbs per serving, this mousse fits perfectly into your keto diet.
- Impressive Presentation: Serve it in elegant glasses to wow your guests without extensive effort.

Tools and Preparation
To make this delightful mousse, you’ll need some essential tools to help streamline the process.
Essential Tools and Equipment
- Mixing bowl
- Electric mixer
- Clean bowl for whipping cream
- Spatula or folding tool
- Serving glasses
Importance of Each Tool
- Mixing bowl: A sturdy bowl is essential for combining the ingredients without splatter.
- Electric mixer: This tool makes quick work of blending the mascarpone and sweetener until smooth.
- Clean bowl for whipping cream: Using a separate bowl ensures that your whipped cream achieves perfect peaks without any interference from other ingredients.
Ingredients
For the Mousse Base
- 1 cup mascarpone (or cream cheese, cold (240g))
- 1/4 cup powdered sweetener (40g; use 1/3 cup / 60g for a sweeter mousse)
- 3 tbsp / 55g peanut butter (smooth)
- 1/2 tsp vanilla extract
For the Whipped Cream
- 1 cup heavy cream (cold (240g))
- pinch sea salt (if your peanut butter is unsalted)
How to Make Keto Peanut Butter Mousse
Step 1: Mix the Base
- In a mixing bowl, combine the mascarpone or cream cheese, powdered sweetener, peanut butter, and vanilla extract.
- Use an electric mixer to blend until fully combined. If using unsalted peanut butter, add a pinch of sea salt at this stage.
Step 2: Whip the Cream
- In a clean bowl, pour in the heavy cream.
- Whip the cream until you reach just below stiff peaks; be careful not to over-whip.
Step 3: Combine and Serve
- Gently fold the whipped cream into the peanut butter mixture until smooth and well combined.
- Spoon or pipe the mousse into serving glasses.
- Top with optional crumbled low-carb biscuits or a drizzle of peanut butter if desired.
Enjoy serving this delightful Keto Peanut Butter Mousse that packs flavor without compromising your dietary goals!
How to Serve Keto Peanut Butter Mousse
Keto peanut butter mousse is a delightful dessert that can be served in various ways. Its creamy texture and rich flavor make it versatile enough for any occasion, whether it’s a casual dinner or an elegant gathering.
Individual Glasses
- Serve the mousse in small glasses for a charming presentation. This allows guests to enjoy their own portion while showcasing the beautiful layers.
Topped with Whipped Cream
- Add a dollop of unsweetened whipped cream on top of the mousse. This enhances the creaminess and adds a touch of elegance.
Drizzled with Sugar-Free Chocolate Sauce
- For chocolate lovers, a drizzle of sugar-free chocolate sauce adds richness and complements the peanut flavor beautifully.
Garnished with Chopped Nuts
- Sprinkle chopped peanuts or other nuts on top for extra crunch. This adds texture and enhances the overall flavor profile.
Accompanied by Fresh Berries
- Serve with fresh raspberries or strawberries on the side. The acidity of the berries balances the sweetness of the mousse perfectly.
With Low-Carb Biscotti
- Pairing keto peanut butter mousse with low-carb biscotti creates a delightful contrast in textures. It’s perfect for dipping!
How to Perfect Keto Peanut Butter Mousse
To ensure your keto peanut butter mousse turns out flawlessly every time, keep these tips in mind.
-
Use cold ingredients: Start with cold mascarpone and heavy cream to achieve a better consistency when whipping.
-
Whip cream properly: Aim for soft peaks when whipping the cream; over-whipping can lead to a grainy texture.
-
Adjust sweetness: Taste before serving. If you prefer a sweeter mousse, add more powdered sweetener gradually until desired sweetness is reached.
-
Don’t skip the salt: A pinch of sea salt can enhance flavors, especially if you’re using unsalted peanut butter.
-
Chill before serving: Allowing the mousse to chill in the fridge for at least 30 minutes helps it set better and enhances flavors.
Best Side Dishes for Keto Peanut Butter Mousse
While keto peanut butter mousse is delicious on its own, pairing it with complementary side dishes can elevate your dessert experience. Here are some fantastic options:
-
Cheese Platter: A selection of hard cheeses like cheddar or gouda provides a savory contrast to the sweetness of the mousse.
-
Sugar-Free Jello: Light and refreshing, sugar-free jello offers a fun pop of color and flavor alongside your creamy dessert.
-
Coconut Macaroons: These chewy treats align perfectly with the flavors of peanut butter and add delightful texture.
-
Chia Seed Pudding: A light chia seed pudding can balance out richness, making it a great companion to your mousse.
-
Avocado Salad: A simple avocado salad dressed with lime juice provides freshness and healthy fats that complement desserts well.
-
Dark Chocolate Bark: Homemade dark chocolate bark (sugar-free) brings an indulgent touch that pairs beautifully with peanut butter flavors.
-
Low-Carb Muffins: Offering mini low-carb muffins alongside adds variety and makes for a satisfying bite-sized treat.
-
Fruit Salad: A mix of low-carb fruits like berries provides color, freshness, and balance against the creamy mousse.
Common Mistakes to Avoid
Making keto peanut butter mousse can be simple, but some common mistakes can affect the final result. Avoid these pitfalls for a perfect dessert.
- Using warm ingredients: Always use cold mascarpone or cream cheese and heavy cream. Warm ingredients can prevent the mousse from fluffing properly.
- Not measuring sweetener accurately: Too much or too little sweetener can alter the flavor. Use a kitchen scale for precision.
- Over-whipping the cream: Whip the cream just to soft peaks. Over-whipping can turn it into butter, ruining the mousse’s texture.
- Skipping the salt: If your peanut butter is unsalted, adding a pinch of sea salt enhances the flavor. Don’t skip this step for a richer taste.
- Not chilling before serving: Allowing the mousse to chill in the refrigerator helps it set up nicely. Serve immediately for the best texture.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- The mousse lasts up to 3 days in the refrigerator.
Freezing Keto Peanut Butter Mousse
- Freeze in an airtight container.
- It keeps well for about 1 month.
Reheating Keto Peanut Butter Mousse
- Oven: Not recommended as it may change the texture.
- Microwave: Heat on low power for a short time if needed; check frequently.
- Stovetop: Gently warm over low heat, stirring until just softened.
Frequently Asked Questions
What is Keto Peanut Butter Mousse?
Keto peanut butter mousse is a creamy, fluffy dessert made with low-carb ingredients like mascarpone, heavy cream, and peanut butter, perfect for keto diets.
How many carbs are in Keto Peanut Butter Mousse?
This delicious mousse contains only 2.9 grams of carbs per serving, making it an excellent choice for low-carb diets.
Can I use almond butter instead of peanut butter?
Yes! Almond butter works well as a substitute and gives a different flavor while still being keto-friendly.
What toppings work best with Keto Peanut Butter Mousse?
You can top it with whipped cream, sugar-free chocolate shavings, or crushed low-carb cookies for added texture and flavor.
How do I make this mousse even sweeter?
If you prefer a sweeter mousse, increase the powdered sweetener to 1/3 cup (60g) during preparation.
Final Thoughts
Keto peanut butter mousse is not only easy to make but also an incredibly satisfying dessert that will please anyone. Experiment with toppings and flavors to make it your own! Whether you’re hosting a dinner party or treating yourself, this recipe is sure to impress.
Keto Peanut Butter Mousse
Indulge your sweet tooth with this Keto Peanut Butter Mousse, a luscious dessert perfect for any occasion. This creamy, sugar-free delight combines rich peanut butter and smooth mascarpone for an irresistible treat that fits seamlessly into your low-carb lifestyle. Whether you’re hosting a dinner party or enjoying a quiet evening at home, this mousse is sure to impress with its decadent flavor and impressive presentation. Plus, it’s quick to whip up in just 5 minutes! Serve it chilled in elegant glasses topped with whipped cream, sugar-free chocolate sauce, or crunchy nuts for added flair.
- Prep Time: 5 minutes
- Cook Time: None
- Total Time: 0 hours
- Yield: Serves 4
- Category: Dessert
- Method: No Bake
- Cuisine: Keto
Ingredients
- 1 cup mascarpone (or cream cheese)
- 1/4 cup powdered sweetener
- 3 tbsp peanut butter (smooth)
- 1/2 tsp vanilla extract
- 1 cup heavy cream
- Pinch sea salt (if using unsalted peanut butter)
Instructions
- In a mixing bowl, combine mascarpone, sweetener, peanut butter, and vanilla. Blend until smooth with an electric mixer.
- In a separate bowl, whip the heavy cream until just below stiff peaks.
- Gently fold the whipped cream into the peanut butter mixture until well combined.
- Spoon into serving glasses and chill before serving.
Nutrition
- Serving Size: 1/2 cup (120g)
- Calories: 352
- Sugar: 2g
- Sodium: 142mg
- Fat: 34g
- Saturated Fat: 18g
- Unsaturated Fat: 14g
- Trans Fat: 0g
- Carbohydrates: 2.9g
- Fiber: 0g
- Protein: 6g
- Cholesterol: 96mg