This homemade marshmallow fluff recipe is so easy, you’ll never buy the jars of fluff again. Plus? This has none of the wonky marshmallow fluff ingredients that come with store-bought. Once you know how to make marshmallow fluff without corn syrup, you’ll never go back to the jarred version. It’s that easy.
How to make marshmallow fluff without corn syrup
The marshmallow fluff ingredients list on store-bought fluff starts with corn syrup as its number one ingredient. That corn syrup is very likely made from GMO corn, so I just won’t buy it. Trouble is, my famous fudge recipe calls for a jar of marshmallow fluff.
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When my friend Melanie at Frugal Kiwi shared a recipe several years ago for Corn Syrup-Free Marshmallows, I knew I’d found the solution.
DIY Marshmallow fluff recipe
Instead of turning the mixture into marshmallows, I modified it into a homemade marshmallow fluff recipe. This is one of those recipes that’s deceptively simple to make, though you will have to spend a bit of time watching the candy thermometer as the mixture comes up to temperature.
I make this marshmallow fluff recipe once a year for the sole purpose of adding to my homemade fudge, but if you need to keep it longer you can store it for 2-3 weeks in the fridge. Making marshmallow fluff myself means that I was able to indulge in our annual tradition without the icky corn syrup that comes in store-bought fluff.
If you use marshmallow fluff in fluffer-nutter sandwiches, you might make this recipe more than once a year. (You could also spread this on these chocolate-chocolate chip muffins for a crazy good dessert!)
Vegetarian marshmallow fluff
While I’ve not tried it, agar agar is the common vegan substitute for gelatin. It replaces gelatin on a one-to-one basis. I’ve had a lot of people ask how to make marshmallow fluff that’s vegan. For that, you can try the agar agar option and substitute sugar for the honey.
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Homemade Marshmallow Fluff Recipe with NO Corn Syrup
Stir together gelatin and ¼ cup cool water in a large mixing bowl. (If you’ll be using your stand mixer, that’s the bowl you’ll want to use.)
Combine sugar, water, honey, and vanilla in a saucepan. Bring to a rolling boil and cook, stirring occasionally, until mixture reaches soft ball stage on a candy thermometer (112-115 degrees C; 238-240 F).
Using a hand mixer or a stand mixer with a whisk attachment, set mixer on low and slowly pour hot syrup over gelatin in mixing bowl. When thoroughly combined, increase speed to high. Beat until mixture becomes lukewarm and starts to get stretchy. With my stand mixer, I had a bowl full of bright white marshmallow fluff in about ten minutes.
*I've had a lot of people ask about making a vegan marshmallow fluff. While I've not tried it, agar agar is the common vegan substitute for gelatin. It replaces gelatin on a one-to-one basis.
I make this marshmallow fluff recipe once a year for the sole purpose of adding to my homemade fudge, but if you need to keep it longer you can store it for 2-3 weeks in the fridge.
First published in December 2013. Last updated November 2018.