Peanut Butter Mousse


5 from 1402 votes
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This keto peanut butter mousse is so smooth, airy, and creamy, you won’t believe it is low carb! Made with just 4 ingredients and ready in minutes! 2 grams net carbs per serving. 

keto peanut butter mousse

Keto Peanut Butter Mousse

When it comes to super easy keto desserts, my favorite recipes to make are chocolate mousse, custard, and this easy keto peanut butter mousse. 

Growing up, my mom’s favorite desserts to make were rarely of the baked variety. Unless it was a family member’s birthday or a bake sale, she stuck to no cook desserts. This suited me fine, as I love any and all kinds of desserts. Her favorite things to make were usually a pudding or a no bake cheesecake, but my all time favorite was her peanut butter mousse. 

My mom first started making her peanut butter mousse after her work colleague’s wedding. Her colleague was originally from America and introduced her to the wonders of peanut butter. Instead of a wedding cake, they served a mini dessert sampler, which included a peanut butter mousse. She acquired the recipe and added it to her repertoire. When I first moved out of home, it was one of the very first recipes of hers I ever made and was so easy to adapt to be keto! 

I’ve been meaning to share a keto peanut butter mousse recipe for quite some time. It’s been my go-to dessert whenever I don’t feel like turning on the oven. I love how it needs just 4 ingredients and takes seconds to prepare- the hard part is waiting for it to chill!

No eggs and no sugar are needed, but you’d never tell. The texture is smooth, airy, and extra creamy. It’s sweet and full of peanut butter flavor.

I had some friends over for dinner the other night and served them this mousse for dessert and NO ONE believed me when I said that it was low carb- They thought it had to be full of sugar!

Ingredients to make a keto peanut butter mousse

Here are the ingredients you’ll need to make this mousse. It’s best for all your ingredients to be at room temperature, for the ultimate smooth texture. 

peanut butter mousse ingredients
  • Peanut butter– Smooth and creamy peanut butter, with no added sugar. Avoid using crunchy or the natural kind, as it will be harder to whip. 
  • Cream cheese– Full fat and softened cream cheese. You can also use dairy free cream cheese. 
  • Powdered sweetener– Don’t waste your money buying expensive packaged varieties, make your own homemade sugar free powdered sugar
  • Vanilla extract– Optional, but adds a lovely touch of vanilla. 
  • Heavy cream– Either standard or heavy whipping cream can be used. 

How do you make a peanut butter mousse?

Start by adding the peanut butter, cream cheese, powdered sweetener, and vanilla extract, if using it, into a large mixing bowl. Using a hand or stick mixer, beat together until combined. Next, add the heavy cream into a separate bowl and beat until stiff peaks form. Gently beat 1/4 of the whipped cream into the peanut butter mixture. Fold through another 1/2 of it, before adding the remaining cream until combined.

Now, transfer the peanut butter mousse into a piping bag with a star tip attached. Pipe the mousse into serving glasses or mason jars and refrigerate for 30 minutes, to firm up. 

low carb peanut butter mousse

Tips to make the best low carb peanut butter mousse

  • You can prepare this mousse up to 3 days in advance. Omit any extra toppings (e.g. crushed peanuts or whipped cream) until you are ready to serve it. 
  • Don’t add all the whipped cream at once- Do it in batches so it keeps the whipped peanut butter airy and light. 
  • If you’d like to make this peanut free, swap out the peanut butter for either smooth almond butter or tahini. 

Storing and freezing the peanut butter mousse

  • To store: The mousse should always be stored in the refrigerator, covered. It will keep well for up to 2 weeks. 
  • To freeze: Cover the mousse completely and store them in the freezer, for up to 6 months. Thaw in the refrigerator overnight before serving. 
peanut butter mousse

More keto no bake dessert recipes to try

keto peanut butter mousse

Peanut Butter Mousse (4 Ingredients!)

5 from 1402 votes
This keto peanut butter mousse is so light, smooth, and creamy, you won't believe it is low carb! Made with just 4 ingredients, it takes less than 5 minutes to make!
Servings: 8 servings
Prep: 5 minutes
Cook: 1 minute
Total: 6 minutes



  • In a large mixing bowl, beat together the peanut butter, cream cheese, powdered sugar, and vanilla extract and set aside. In a separate mixing bowl, beat together the heavy cream until stiff peaks form. 
  • Gently beat through ¼ of the whipped heavy cream into the peanut butter mixture. Fold through another ½ of the cream and mix well. Add the remaining cream until combined. 
  • Transfer the mousse into a piping bag with a swirly tip. Pipe into mason jars or glass jars and refrigerate for at least 30 minutes.


* You can use smooth almond butter or tahini. 
TO STORE: The mousse should always be stored in the refrigerator, covered. It will keep well for up to 2 weeks. 
TO FREEZE: Cover the mousse completely and store them in the freezer, for up to 6 months. Thaw in the refrigerator overnight before serving. 


Serving: 1servingCalories: 288kcalCarbohydrates: 7gProtein: 10gFat: 26gSodium: 239mgPotassium: 249mgFiber: 4gVitamin A: 381IUCalcium: 42mgIron: 1mgNET CARBS: 3g
Course: Dessert
Cuisine: American
Author: Arman Liew
Tried this recipe?Give us a shout at @thebigmansworld or tag #thebigmansworld!

Arman Liew

I’m a two time cookbook author, photographer, and writer, and passionate about creating easy and healthier recipes. I believe you don’t need to be experienced in the kitchen to make good food using simple ingredients that most importantly, taste delicious.

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Recipe Rating


  1. 5 stars
    The best so far!!!!! I used plain Greek yogurt. I am new to low car, no sugar, low fat anything. I am extremely hard to please. This was delicious!!!!!!!!

  2. Hi. This looks delicious. Love that it’s low carb but it is very high fat. Can you tell me how much you suggest eating if you are trying to maintain weight? Thank you

  3. 5 stars
    WOW! I’m sorry I was spectical!!!! It worked! Pick my bottom jaw of the floor lol
    Thank you!!!!!!
    Making the pb mousse atm

  4. 5 stars
    So good!! So I accidently just mixed everything in a bowl together(I can’t read lol) and it still turned out wonderful after a few mins of heavy stirring. Smooth and delicious. I added some dark chocolate chips on top and sugar free whip.

  5. This recipe is delicious. I add unsweetened baking chocolate because I love chocolate. A hit for sure!!!

  6. 5 stars
    This came out great. I’m putting it on top of keto brownies. I didn’t have powdered swerve so i just put granulated in my ninja and turned it into powdered. Saved buying a whole bag for right now.

  7. 5 stars
    So very easy to make and devilishly satisfying. I’ve made this multiple times and it never gets old.

  8. 5 stars
    This was unbelievably delicious!
    I’m trying to cut down sugar and cards. With this being one of my favorite desert dips, I thought I’d love to try this recipe but I won’t set my standards high. Boy was I wrong! New healthy favorite for the whole family! No bad aftertaste and I can’t tell it’s not made any differently! Thank you!!

  9. This recipe is incredible! It’s perfectly sweet and satisfies a sweet too for sure! I added a little sugar free vanilla syrup to the whip! So good! Definitely going to be a keto staple in my house!

  10. I’ve made this several times. I layer it with sugar free chocolate syrup and top with sugar free white and chocolate chips 🙂

  11. 5 stars
    Super *AMAZING* recipe! Thank you so much for taking the time to leave it here for all of us.
    I made a few minor tweaks (to my taste): added extra vanilla, about a third of a cup less PB, a dash of cinnamon and only a quarter cup of powdered sugar.

  12. You could try rice malt syrup, is it Leto..not sure. But I have switched out sugar for that before. It is thick like golden syrup, and can be measured the same as normal, just use equivalent measuring cup

  13. Just made a smaller batch of this as I was craving something sweet. Hit the spot – delicious.

    Thank you!

  14. Do you think this would work as a cake frosting? I want to make something special for my husband for valentines and the combination of peanut butter with chocolate is his favorite.

    1. Hi April- I think it will be too thin or thin out if left as a frosting unfortunately. You could try it on a chilled cake or pudding though 🙂

  15. This is excellent! Has very peanutty flavor and great mousse texture. Be sure to powder your sugar or will be gritty! Husb loves it!!