If you’re on the lookout for a dessert that feels indulgent yet fits perfectly into your low-carb lifestyle, this Keto Peanut Butter Mousse Recipe is about to become your new favorite. Silky, rich, and incredibly easy to pull together, it combines the creamy depth of peanut butter with a luscious whipped texture that melts in your mouth. It’s the kind of treat that satisfies your sweet tooth without derailing your keto goals, making it a must-know recipe for both beginners and seasoned low-carb fans alike.

Ingredients You’ll Need
Gathering these simple but powerful ingredients is all it takes to whip up this dreamy mousse. Each component plays a crucial role in achieving the perfect balance of flavor and texture, ensuring every bite is as delightful as it is keto-friendly.
- 1 cup heavy cream: This is your base for whipped cream, providing the mousse with its rich, airy texture.
- 1/4 cup creamy peanut butter (sugar-free): Adds that classic nutty flavor and smoothness without any added sugars.
- 2 tablespoons powdered erythritol (or sweetener of choice): Sweetens the mousse gently while keeping carbs in check.
- 1 teaspoon vanilla extract: Enhances the overall flavor profile with warm, aromatic notes.
- Optional: Chopped peanuts or sugar-free chocolate chips: Perfect for adding a little crunch or extra chocolatey indulgence as a topping.
How to Make Keto Peanut Butter Mousse Recipe
Step 1: Whip the Heavy Cream
Start by pouring the heavy cream into a large mixing bowl and beat it using a hand mixer. Your goal is to reach soft peaks, which means when you lift the beaters, the cream should hold a peak that gently folds over at the tip. This whipped cream will give your mousse its light and airy structure.
Step 2: Combine Peanut Butter and Sweetener
In a separate bowl, mix the creamy peanut butter with the powdered erythritol and vanilla extract. Stir this mixture until it’s perfectly smooth with no lumps. This step ensures that the peanut butter shines through and the sweetness is evenly distributed.
Step 3: Fold Whipped Cream into Peanut Butter Mixture
Gently fold the whipped cream into the peanut butter bowl using a spatula. Take your time here—fold with care to keep all the air you just worked hard to whip into the cream. This creates that fluffy, mousse-like texture that makes this recipe so special.
Step 4: Chill before Serving
Divide the mousse into individual serving bowls or glasses and refrigerate for at least 30 minutes. Chilling helps the mousse set perfectly and allows the flavors to meld together beautifully.
Step 5: Add Optional Toppings
If you like a little added texture, sprinkle chopped peanuts or sugar-free chocolate chips on top before serving. These toppings add a delightful crunch or sweet burst that complements the creamy mousse wonderfully.
How to Serve Keto Peanut Butter Mousse Recipe

Garnishes
A simple garnish can elevate your mousse from delicious to stunning. Try a few roughly chopped roasted peanuts for a nutty crunch or a sprinkle of sugar-free chocolate chips to add visual contrast and a touch of decadence.
Side Dishes
This mousse pairs wonderfully with fresh berries like raspberries or strawberries, which add a juicy brightness to balance the richness. A crisp herbal tea or a cold brew coffee can also enhance the dessert experience without adding carbs.
Creative Ways to Present
For a fancy dinner party, present the mousse in small mason jars or decorative glasses. Layer it with a keto-friendly chocolate ganache or crushed nuts to create parfaits that look spectacular and taste even better. You can also pipe the mousse into elegant swirls using a pastry bag for a professional touch.
Make Ahead and Storage
Storing Leftovers
Keep any leftover mousse covered tightly in the refrigerator. It will stay fresh for up to 3 days, making it perfect for quick treats later in the week.
Freezing
You can freeze the mousse by placing it in an airtight container. When you want to enjoy it again, let it thaw in the fridge overnight. While the texture may soften slightly, it still remains incredibly tasty and satisfying.
Reheating
This mousse is best enjoyed chilled and does not require reheating. If you want it a bit softer after refrigeration, just let it sit at room temperature for 10-15 minutes before serving.
FAQs
Can I use crunchy peanut butter instead of creamy?
Absolutely! Using crunchy peanut butter will add delightful bits of texture throughout the mousse, though it might make folding in the cream a bit trickier. It’s a great tweak if you love a little extra crunch.
What sweetener works best for this recipe?
Powdered erythritol is perfect for blending smoothly, but you can also use monk fruit sweetener or allulose. Just make sure it’s a powdered form to avoid graininess in the mousse.
Can I make this mousse dairy-free?
Traditional heavy cream is key for the light texture, but you can experiment with coconut cream for a dairy-free alternative. Keep in mind the flavor will shift slightly, leaning more coconut-forward.
How long does the mousse need to chill before serving?
Chilling for at least 30 minutes is recommended to let it set beautifully, but you can refrigerate it longer—up to a few hours—to deepen the flavors.
Is this mousse suitable for kids?
Definitely! This mousse is rich, sweetened gently, and packed with peanut butter flavor that kids tend to love. Just ensure any sweetener used is suitable for children according to your preferences.
Final Thoughts
I can honestly say this Keto Peanut Butter Mousse Recipe has been a game-changer in my dessert rotation. It’s the perfect blend of flavor, texture, and simplicity that feels like a treat but fits seamlessly into keto living. I truly hope you give it a try and enjoy every creamy, dreamy bite as much as I do!
Print
Keto Peanut Butter Mousse Recipe
- Prep Time: 10 minutes
- Cook Time: 0 minutes
- Total Time: 40 minutes
- Yield: 4 servings
- Category: Dessert
- Method: No-Cook
- Cuisine: American
- Diet: Low Carb
Description
This Keto Peanut Butter Mousse is a rich, creamy, and low-carb dessert perfect for those following a ketogenic lifestyle. Made with sugar-free peanut butter and erythritol, it’s a guilt-free indulgence that combines fluffy whipped cream with the bold flavor of peanut butter, making it a delicious and satisfying treat that’s ready in just 40 minutes.
Ingredients
Ingredients
- 1 cup heavy cream
- 1/4 cup creamy peanut butter (sugar-free)
- 2 tablespoons powdered erythritol (or sweetener of choice)
- 1 teaspoon vanilla extract
- Optional: Chopped peanuts or sugar-free chocolate chips for topping
Instructions
- Whip the Cream: In a large mixing bowl, beat the heavy cream using a hand mixer until soft peaks form. This creates a light, airy base for the mousse.
- Prepare Peanut Butter Mixture: In a separate bowl, mix together the creamy peanut butter, powdered erythritol, and vanilla extract until smooth and well combined, ensuring there are no lumps.
- Fold Mixtures: Gently fold the whipped cream into the peanut butter mixture using a spatula. Mix until the mousse is smooth and fluffy but be careful not to deflate the whipped cream.
- Chill the Mousse: Divide the mousse evenly into serving bowls or glasses. Cover and refrigerate for at least 30 minutes to allow it to set and the flavors to meld.
- Add Toppings (Optional): Before serving, optionally top each mousse with chopped peanuts or sugar-free chocolate chips to add texture and a bit of extra flavor.
Notes
- Use sugar-free peanut butter to keep the mousse keto-friendly.
- Powdered erythritol can be substituted with any low-carb powdered sweetener to taste.
- Be careful when folding the whipped cream to keep the mousse light and fluffy.
- Refrigerating the mousse improves the texture and flavor.
- This dessert is best served chilled and consumed within 2 days for optimum freshness.

