Keto Peanut Butter Mousse

Annie Lampella @ Ketofocus

By Annie Lampella, Pharm.D.

Published April 24, 2022 • Updated February 2, 2026

Creamy, smooth peanut butter mousse - only 5 ingredients!

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All you need is 5 ingredients and 5 minutes to make this velvety keto peanut butter mousse.

I am a huge fan of peanut butter. To keep me from eating spoonful after spoonful of the nutty, creamy stuff, I like to make peanut butter treats like my peanut butter pie and chewy peanut butter cookies. This mousse is the simplest of them all because it only uses five ingredients and doesn’t need any baking.

drizzling melted chocolate on top of a bowl of silky peanut butter mousse topped with nuts

For a quick and easy low carb dessert that everyone will love, you have to try this peanut butter mousse. The light and airy mousse is packed with nutty flavor and pairs perfectly with hot summer days when you want a cool treat or when those peanut butter cravings hit.

How to make peanut butter mousse

  1. Combine creamy peanut butter with softened cream cheese, powdered sugar free sweetener and vanilla.
  2. In a separate bowl, whip heavy whipping cream until stiff peaks form using an electric mixer.
  3. Fold in 1/3 of the whipped cream into the peanut butter mixture in order to lighten up the batter. Then gently fold in the remaining whipped cream aiming to keep the fluffiness of the mousse.

a spoon digging into a bowl of creamy peanut butter mousse

Key ingredients

  • Peanut butter – The star of the show, you can’t have peanut butter mousse without peanut butter. Although you could substitute with your favorite nut butter, like almond butter or cashew butter and achieve a similar result. When selecting a peanut butter, use creamy instead of chunky (unless you want chunks of nuts in your mousse). Also look for one that doesn’t contain added sugars. Ideally the label should just say peanuts or peanuts and palm oil.
  • Cream cheese – Cream cheese gives this no-bake dessert structure so you don’t end up with a floppy mousse.
  • Powdered sweetener – Added to sweeten our dessert. Look for a confectioner’s sugar-free sweetener like erythritol, monk fruit or allulose.
  • Heavy cream – Whipped until stiff peaks form. This is what gives our low carb mousse its lightness and airiness.
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Keto Peanut Butter Mousse

5 (2) Prep 5m Total 5m 4 servings

Ingredients

Step by Step Instructions

Step by Step Instructions

1
Cream peanut butter mixture

In a large bowl, cream together peanut butter, cream cheese, powdered sweetener and vanilla.

holding a bowl of peanut butter mixture with a whisk above
Ingredients for this step
  • Peanut butter (creamy)
  • Cream cheese (softened)
  • Powdered sugar free sweetener
  • Vanilla
2
Make whipped cream

In a medium bowl, add heavy cream. Using an electric mixer, beat until stiff peaks form.

mixing whipped cream with a handheld mixer
Ingredients for this step
  • Heavy whipping cream
3
Combine mixtures

Add 1/3 of the whipped cream to the peanut butter mixture and mix to combine. Then add in remaining whipped cream and gently fold until combined.

creamy peanut butter mousse with swirl on top
Tip Adding in a small amount of whipped cream first will allow the mixture to thin out in order for the rest of the whipped cream to be gently folded in to keep the airiness of the mousse.
Nutrition Per Serving
329 Calories
44g Fat
10g Protein
3.8g Net Carbs
5.8g Total Carbs
4 Servings
Nutrition disclaimer

The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.

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peanut butter mousse piped into a dish and topped with nuts

Nut butters

If you’re avoiding peanuts or want a lower-carb nut, you can use other nut butters in this recipe. Keep in mind that the texture, consistency and flavor will change. Here are some options to try.

  • Almond butter
  • Cashew butter
  • Macadamia nut butter
  • Sunflower seed butter
  • Pili nut butter
a swirly pile of peanut butter mousse in a small clear container topped with drizzled chocolate and nuts

Variations of mousse

Peanut butter mousse is a creamy, nutty no-bake dessert, but if you want a different flavor, try these variations.

  • Chocolate mousse – Make a chocolate mousse, by using unsweetened cocoa powder. This recipe only uses 3 ingredients.
  • White chocolate mousse – Melt sugar-free white chocolate chips and fold into your mousse mixture.
  • Strawberry – Make a sugar-free strawberry sauce and fold into the whipped cream and cream cheese.

Storage information

This peanut butter mousse can be stored in the refrigerator for up to 4-5 days. You can keep the mousse at room temperature for about an hour but this dish is best served cold.

You can freeze the mousse to make an easy, creamy peanut butter ice cream!

Keto Peanut Butter Mousse

Frequently Asked Questions

Is peanut butter keto?

Peanut butter has a decent macro profile. It's slightly higher in carbohydrates compared to other nuts, but if you eat it in moderation, it fits into most keto macros just fine. 2 tablespoons of no sugar peanut butter has 4 grams net carbs.

Can I mix everything in one bowl?

You can combine everything in one bowl; however, the texture will be more creamy instead of airy and light like a mousse should be.

Can I make this dairy free?

Yes, you can make dairy free peanut butter mousse. Instead of heavy cream, use coconut cream instead.

About the Author
Annie Lampella, Pharm.D.

Annie Lampella, Pharm.D.

Annie is a Doctor of Pharmacy, mom, and the recipe creator behind KetoFocus. With a B.S. in Genetics from UC Davis, she has over 14 years of experience developing family-friendly keto recipes based on the science of human metabolism.

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Reviews 2
5 Stars (2 Reviews)
  1. T
    Tina P. Mar 12, 2025

    I made this mousse last weekend and it was a nice treat after a long week. The texture was really creamy and it felt indulgent even though it's low carb. I chilled it for a few hours before eating and it reminded me of a peanut butter cheesecake.

  2. B
    Brittany Sep 6, 2022

    I think this is my favorite Keto dessert! I am a huge peanut butter lover: reeses pieces, reeses cup, peanut butter, you name it. I am new to Keto and this dessert is perfect to make my peanut butter craving dissappear! Before Keto my go to ice cream when I went to Dairy Queen was the Reeses Blizzard and this taste just like it! Sometimes I do it as a mousse and sometimes if I'm impatient I mix it all together and freeze it to make peanut butter ice cream. I even got my friends to try it next to the Reese blizzard and most of them couldn't guess which one was Keto.

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