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    Home » Other Desserts » Sugar Free Marshmallows

    Published: Nov 25, 2022 · Modified: May 5, 2023 by Carolyn

    Sugar Free Marshmallows

    This post may contain Amazon or other affiliate links. As an Amazon Associate I earn from qualifying purchases.

    10.6K shares
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    You will be astonished at how easy it is to make sugar free marshmallows at home. These keto friendly treats are perfect in hot chocolate and delicious on their own. And they are almost completely carb free!

    Top down image of a keto sugar free marshmallow in a cup of hot chocolate.

    Seriously, people, please tell me why it took me so long to try making my own keto marshmallows??? I am kicking myself. HARD!

    I finally decided to give it a try a few years ago, after many reader requests. And I was utterly dumbfounded by how easy it was. My only regret was that I didn’t try it earlier.

    The truth is that I don’t like marshmallows all that much. Let me rephrase that. I don’t like conventional marshmallows all that much and I never have. I find them way too sweet and lacking in any flavor.

    And most of the packaged sugar free marshmallows on the market are kind of scary. Maltitol, and sorbitol, and sucralose, oh my! Don’t go there. Just don’t.

    But now you don’t have to, because this sugar free marshmallow recipe will blow your mind. And you can use them in other wonderful desserts like Keto Rocky Road Fudge or Mississippi Mud Bars.

    Powdered sweetener being sprinkled over a pile of sugar free marshmallows.

    You need to try this!

    Have I mentioned how easy these are to make? Really, quite shockingly easy. The hardest part is waiting for them to dry out properly.

    They’re also quite tasty and I like them far better than those made with sugar. They are pillowy and soft, with a balanced sweetness. And they melt slowly and delightfully in a mug of keto hot chocolate.

    I did a quite a bit of research when I created this recipe. I honestly hadno idea what marshmallows were even made of, besides copious amounts of sugar. Most of them also have plenty of corn syrup.

    I did manage to find a few corn syrup-free recipes, like this one, that I used as a guide. But I did a couple of things differently to make them keto friendly. I used more gelatin and quite a bit less sweetener than the recipe called for.

    And it worked like a charm! Hooray! So much better than regular marshmallows, since they aren’t tooth-achingly sweet.

    A pile of sugar free marshmallows on a blue background.

    Reader Testimonials

    Here’s what readers are saying about my sugar free marshmallow recipe:

    “These are amazing and even my kids love them and can’t tell the difference!” — Kiley

    “Omg I just made these marshmallows and tasted the spoon after pouring them into the pan, and they’re absolutely amazing! Just like the real thing. Thank you!” — Hannah

    “WHAT….. These are AMAZING! They’re already amazing straight out of the mixer (I couldn’t help myself) and are even more incredible when they’ve had time to set! Tomorrow I’ll be making the No-Bake Smores Bars with them! THANK YOU for another home run!” — Elizabeth

    “These are a new staple recipe in my house – I couldn’t tell the difference between the full sugar kind. They even brown well when put in fire!” — Christine

    Ingredients you need

    Top down image of ingredients needed for keto marshmallows.
    • Gelatin: I always use good grassfed gelatin in my keto recipes. But Knox gelatin will work as well. It has more gelling power so you need to use less. Try about 1 ½ tablespoons.
    • Sweetener: I use two different sweeteners for these marshmallows to give them the right consistency. Powdered Swerve and BochaSweet work well together so that they firm up properly but they don’t become too hard and recrystallize. Some readers have had success using all of one or the other. I do not recommend allulose here as it makes them so soft that they melt away the moment you use them in anything.
    • Cream of tartar: This useful baking ingredient is made of tartaric acid. Cream of tartar helps stabilize egg whites and other whipped recipes such as these keto marshmallows. You can skip it but I do recommend it.
    • Pinch salt
    • Extract or flavoring: Use vanilla for regular marshmallows. But you can also have fun playing with the flavors here. Peppermint extract is delicious, but caramel extract is tasty too!

    Step by Step Directions

    A collage of 6 images showing how to make sugar free marshmallows.

    1. Prep the pan: Line an 8×8 inch pan with parchment or waxed paper and lightly grease the paper. 

    2. Bloom the gelatin: Attach the whisk attachment to a stand mixer. Pour half of the water into the bowl and sprinkle with the gelatin. Let stand while preparing the syrup.

    3. Make the sweetener “syrup”: In a medium saucepan over medium heat, combine the remaining water, the sweeteners, the cream of tartar, and the salt. Bring to a boil, stirring to dissolve the sweeteners. Using a candy thermometer or an instant read thermometer, bring the mixture to 237F to 240F. Remove from heat. 

    4. Beat until fluffy: Turn the stand mixer on low and slowly pour the hot syrup down the side of the bowl. Once all of the syrup is mixed in, add the extract. Turn the stand mixer to medium high and beat until the mixture is lukewarm, thickened and white. This can take 5 to 15 minutes. 

    5. Spread in the pan: Working quickly, pour the mixture into the prepared pan and smooth the top. Let set for 4 to 6 hours, until the top is no longer tacky to the touch.

    6. Let them dry: Flip out onto a cutting board and cut to the desired size. Dust with powdered sweetener, if desired. Let sit for a day exposed to the air to dry out a bit, then store in a covered container.

    A hand putting a keto marshmallow into a cup of hot chocolate.

    Expert tips

    I’ve made these keto marshmallows many, many times and I’ve learned a few things along the way. So I figured I’d pass these tips on to you!

    Make sure to let the gelatin bloom in water for a few minutes, as it allows the gelatin to combine properly with the hot syrup. Also remember that gelatin and collagen are not the same thing. Collagen does not work in this recipe because it does not have the gelling powder of gelatin.

    Erythritol based sweeteners such as Swerve will recrystallize if used on their own. And sweeteners like Bocha Sweet will leave you with a goopy mess that may not firm up properly. So using them in combination is best. I do not recommend allulose for these sugar free marshmallows, as it makes them extra soft and they melt away too easily.

    Work quickly once your mixture is thick and white. Very quickly pour it into the prepared pan and spread it. If you wait too long, it starts setting and you will get a one big lump that you can’t spread properly. But you can rewarm the mixture gently until spreadable, if this happens.

    Use whatever flavoring or extract you desire. Vanilla is the standard, but peppermint extract or caramel extract are delicious too!

    A keto marshmallow floating in a mug of hot chocolate.

    Frequently Asked Questions

    What are sugar free marshmallows made of?

    Many sugar free marshmallows contain artificial sweeteners such as aspartame and sucralose. Other use maltitol, which can spike blood sugar. However, this recipe is made with natural keto sweeteners, gelatin, water, and a little vanilla extract.

    How many carbs are in sugar free marshmallows?

    These keto marshmallows have only 0.1g carbs per serving!

    How long will keto marshmallows keep?

    Keto marshmallows can keep for weeks and weeks, as there is nothing in them that spoils. You can store them on the counter in a covered container for 2 to 3 weeks. You can also refrigerate or freeze them them for several months. I had a batch in the refrigerator for over 2 months and it was just as good as when I first made them.

    Top down image of a keto sugar free marshmallow in a cup of hot chocolate.

    Sugar Free Marshmallows

    You will be astonished at how easy it is to make sugar free marshmallows at home. These keto friendly treats are perfect in hot chocolate and delicious on their own. And they are almost completely carb free!
    4.97 from 54 votes
    Print Pin Rate
    Course: Dessert
    Cuisine: American
    Keyword: marshmallow recipe, sugar free marshmallows
    Prep Time: 20 minutes minutes
    Cook Time: 5 minutes minutes
    Resting Time: 4 hours hours
    Total Time: 25 minutes minutes
    Servings: 10 servings (about 20 marshmallows)
    Calories: 14kcal

    Ingredients

    • 1 cup water , divided
    • 2 ½ tablespoon grassfed gelatin
    • ⅔ cup powdered Swerve Sweetener
    • ⅔ cup Bocha Sweet
    • ⅛ teaspoon cream of tartar
    • Pinch salt
    • 1 teaspoon vanilla extract

    Instructions

    • Line an 8×8 inch pan with parchment or waxed paper and lightly grease the paper. 
    • Attach the whisk attachment to a stand mixer. Pour half of the water into the bowl and sprinkle with the gelatin. Let stand while preparing the syrup.
    • In a medium saucepan over medium heat, combine the remaining water, the sweeteners, the cream of tartar, and the salt. Bring to a boil, stirring to dissolve the sweeteners. 
    • Using a candy thermometer or an instant read thermometer, bring the mixture to 237F to 240F. Remove from heat. 
    • Turn the stand mixer on low and slowly pour the hot syrup down the side of the bowl. Once all of the syrup is mixed in, add the extract. Turn the stand mixer to medium high and beat until the mixture is lukewarm, thickened and white. This can take 5 to 15 minutes. 
    • Working quickly, pour the mixture into the prepared pan and smooth the top. Let set for 4 to 6 hours, until the top is no longer tacky to the touch.
    • Flip out onto a cutting board and cut to the desired size. Dust with powdered sweetener, if desired. Let sit for a day exposed to the air to dry out a bit, then store in a covered container. 

    Video

    Notes

    Storage Information: Store them on the counter in a covered container for 2 to 3 weeks. You can also refrigerate or freeze them them for several months. I had a batch in the refrigerator for over 2 months and it was just as good as when I first made them. 
    Nutrition Facts
    Sugar Free Marshmallows
    Amount Per Serving (1 serving = 2 marshmallows)
    Calories 14
    % Daily Value*
    Carbohydrates 0.1g0%
    Protein 1.5g3%
    * Percent Daily Values are based on a 2000 calorie diet.
    10.6K shares

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    Nutritional Disclaimer

    Please note that I am not a medical or nutritional professional. I am simply recounting and sharing my own experiences on this blog. Nothing I express here should be taken as medical advice and you should consult with your doctor before starting any diet or exercise program. I provide nutritional information for my recipes simply as a courtesy to my readers. It is calculated using MacGourmet software and I remove erythritol from the final carb count and net carb count, as it does not affect my own blood glucose levels. I do my best to be as accurate as possible but you should independently calculate nutritional information on your own before relying on them. I expressly disclaim any and all liability of any kind with respect to any act or omission wholly or in part in reliance on anything contained in this website.

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      Recipe Rating




    1. Marla says

      May 06, 2023 at 4:58 pm

      if I wanted them sweeter, like traditional marshmallows, how much would I adjust the Swerve and Bocha Sweet?

      Reply
    2. Marla says

      May 06, 2023 at 4:55 pm

      if I did want them sweeter like regular marshmallows are, how much would I adjust the Swerve and BocaSweet?

      Reply
    3. Colleen Prusha says

      April 11, 2023 at 9:50 am

      5 stars
      It took me months to try this recipe because, 1, I feared it would be too difficult (it is not!) and, 2, I was afraid to use the beef gelatin recommended because of the horrendous 1&2* reviews regarding the smell. Carolyn, you convinced me that it was a legit product so I finally made them. They are delicious! I did notice a faint wet-dog smell when the gelatin was blooming, but noticed no unpleasant taste. I am curious why you changed brands of gelatin in the link you provide in your recipe?

      Reply
    4. Kathi S. says

      April 05, 2023 at 6:19 pm

      Carolyn, Will you clarify for me… When you say you don’t recommend allulose, do you mean don’t sub allulose for the Bocha Sweet, or do you mean don’t use all allulose?

      Reply
      • Carolyn says

        April 05, 2023 at 8:48 pm

        Don’t use ANY allulose at all. They are so soft and they disappear in baked goods.

        Reply
        • Kathi S. says

          April 06, 2023 at 1:34 pm

          Thank you. Gonna make a keto version of peeps for my husband.

          Reply
          • Maggie Henry says

            April 16, 2023 at 7:25 am

            My husband loves those things! What did you use for a mold? How did it work?

            Reply
    5. Terri says

      March 20, 2023 at 5:32 pm

      5 stars
      I made these yesterday and they are so good. I want to make the rocky road ice cream which I will make tomorrow and hoping it is really good! My husband is a diabetic and has been keto since January and has lost 30 lbs and so I want to make him some desserts for him that he can eat without feeling like he has given up on desserts. I have been on low carb for over a year and I have felt so much better!

      Reply
      • Carolyn says

        March 20, 2023 at 6:18 pm

        Wonderful!

        Reply
    6. Shannon says

      February 25, 2023 at 1:37 pm

      5 stars
      Wonderful recipe! Turned out great.

      Reply
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