Classic whipped, light, airy and creamy Peanut Butter Mousse is made with just 5 ingredients in only 5 minutes! It's the perfect last minute quick and easy dessert.

Jump to:

• ❤️ Why You'll Love This Peanut Butter Mousse
• 🛒 Ingredients for Peanut Butter Mousse
• 🔪 How to Make Keto Peanut Butter Mousse
• 💡 Tips
• ☑️ Storage Instructions
• 🔄 Substitutions and Additions
• Is peanut butter allowed on the Keto diet?
• How Many Carbs in Peanut Butter?
• Do you put egg in mousse?
• What is peanut butter mousse made of?
• What makes a mousse a mousse?
• What is mousse filling made of?
• 🍽️ More Keto Mousse Recipes

❤️ Why You'll Love This Peanut Butter Mousse

• Whipped, light and airy classic mousse texture
• Smooth and creamy peanut butter adds great flavor
• Top with a drizzle of melted chocolate and chopped crunchy peanuts
• Easy to make with only 5 ingredients
• Sugar-free and Keto friendly

Peanut butter has long been a favorite pantry staple. So much so that there's even a National Peanut Butter Day every year on January 24th. What better way to honor it than to create a rich and velvety Peanut Butter Mousse! If you like a no bake cheesecake type texture, you're simply going to flip over this mousse recipe.

Whether you need a dessert to serve after dinner or just something quick to satisfy a sweet tooth, this 5 ingredient mousse can be ready in under 25 minutes and is exactly what you're looking for.

Even though this Keto dessert recipe is super easy to make, don't let that fool you because this rich and creamy peanut butter mousse will delight your taste buds bite after bite!

🛒 Ingredients for Peanut Butter Mousse

• Mascarpone cheese
• Heavy whipping cream
• Creamy Peanut Butter (no sugar added)
• Monkfruit/Allulose, powdered
• Vanilla extract

*Exact measurements are listed in the recipe card below.

🥣 Recommended Tools

• Mixing bowls
• Hand mixer
• Piping bag with tip

🔪 How to Make Keto Peanut Butter Mousse

Add the heavy cream to a mixing bowl and whip using a hand mixer, until you have stiff peaks, then set aside.

In another bowl, add in the remaining ingredients and mix until well combined.

Fold in the whipped cream in 3 additions.

And keep folding until you have no streaks remaining.

Chill in the fridge for at least 20 minutes and serve.

Optional: Top with a drizzle of melted chocolate, peanut butter, chopped peanuts and/or grated sugar-free chocolate.

💡 Tips

• Whenever making homemade whip cream, always use the coldest heavy cream that you can. In addition, using a cold bowl also helps the cream whip up better. For this reason, whenever I make whip cream, I place my bowl in the freezer for 10-15 minutes prior to pouring in the cream.
• When you're ready to incorporate the whip cream into the peanut butter and mascarpone mixture, be sure to take your time and do it in 3 additions. This allows the whip cream to fully incorporate between additions and helps to minimize a reduction in volume.
• Store the prepared mousse in the fridge for 20-30 minutes before adding any toppings and serving. This allows time for the mousse to set up.

☑️ Storage Instructions

Store leftover mousse in an airtight container in the fridge for up to 5 days.

🔄 Substitutions and Additions

• If you don't have mascarpone, you can use cream cheese instead. Just be sure to adjust your macros accordingly, since cream cheese does have slightly more carbs.
• If you have a peanut allergy or just don't care for peanuts, this low carb mousse recipe works with almond butter just as easily. You can also use sun butter, which is made from sunflower seeds. Because of the natural sweetness of each one, you may have to adjust the amount of sweetener you add to the mousse.
• If you don't have the Monkfruit/Allulose blend that I use in this recipe, you can substitute it with Swerve.
• This Keto mousse can be served in a dish family style or for an added touch, you can you serve it in individual dessert cups.
• For extra decadence, you can drizzle Homemade Chocolate Sauce or Salted Caramel Sauce right on top or even use a little sweetened whipped cream.
• If you are out of heavy cream, you can substitute with unsweetened coconut cream, since it can be whipped in the same way as the heavy cream.

Is peanut butter allowed on the Keto diet?

Peanuts are indeed a legume and it's debatable whether they are considered Keto friendly. Because they are high in fat and fiber, this makes them an exception to the rule in most cases.

The real question if peanut butter is Keto, boils down to what ingredients are used to make it. Unfortunately, some of the brands we grew up with in our PB&J sandwiches contain a significant amount of sugar.

When you're selecting a Keto friendly peanut butter, you want to look for one that says, " All Natural," and also indicates there is no sugar added. Here are some other recipes that I use it in:

• Chocolate Peanut Butter Fudge
• Peanut Butter Smoothie
• Chocolate Peanut Butter Cups
• Easy Peanut Butter Cookies

Also be sure to check out this Keto Peanut Butter Pie, if you're looking for another tasty peanut butter dessert!

How Many Carbs in Peanut Butter?

The amount of carbs in peanut butter greatly depends on the brand. All natural, no sugar added peanut butter will have between 4-5 net carbs per 2 tablespoons.

Do you put egg in mousse?

Traditionally yes, you actually use raw eggs, which are concerning for some. While the risk of illness from eating raw eggs is low, children, the elderly, pregnant women and anyone who has weak immune system should avoid eating raw eggs, so it's recommended to use pasteurized instead.

However, in this low carb mousse recipe, eggs are not used at all, which also makes it much quicker and easier to make!

What is peanut butter mousse made of?

This Keto mousse uses just a handful of ingredients, including peanut butter, mascarpone, heavy cream, sweetener and vanilla. All sugar-free and all low carb and Keto friendly.

What makes a mousse a mousse?

Traditional mousse takes a combination of eggs, sweetener and cream that are whipped separately, then gently folded together give it that classic super airy texture.

What is mousse filling made of?

As I mentioned above, traditional mousse is made with raw eggs, much like in this French Silk Pie recipe, however they are, for the most part, gently cooked. In this Keto friendly mousse though, I've chosen to eliminate the eggs all together and instead use a mixture of mascarpone and heavy cream that is whipped to give it that light mousse-like texture.

🍽️ More Keto Mousse Recipes

• Almond Joy Chocolate Mousse
• Lemon Cheesecake Mousse
• Nutella Chocolate Mousse
• Salted Caramel Cheesecake Mousse
• Easy Pumpkin Cheesecake Mousse
• Chocolate Avocado Mousse

*Originally published on May 8, 2020, updated on February 1, 2024 with new photos and helpful tips.