Homemade Marshmallow Sauce
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You'll love having a jar of this Homemade Marshmallow Sauce in your cupboard! So simple to make and great for so many uses, from ice cream sundaes to fluffernutter sandwiches! Just five simple ingredients and naturally gluten-free.

Hey guys! Once again, I'm dashing this one off in a hurry because my kiddos are about to blast through the front door at any moment and all hell's gonna break loose!
This is a really useful recipe that you'll love having in your back pocket! It whips up really fast with only 5 ingredients, and it's sooooo fluffy, sweet, and vanilla-y. I love it on everything from ice cream sundaes to peanut butter sandwiches.

It's a little thinner and more pourable than marshmallow fluff, but I think if you cut the water down a bit you'd have a dead ringer on your hands. Personally, I think the sauce consistency is more versatile.
I LOVE this with chocolate ice cream. It really is my favorite of all ice cream toppings. You could also swirl it into your homemade ice cream recipes as they come out of the machine! But there are tons more uses, you'll discover when you have a jar of this in your cupboard or fridge!

I'm sorry to be in such a rush but they just busted down the door and they're dying to tell me all about their End-of-School-Year Party!

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This post contains affiliate sales links.
Ingredients
- 1 cup (250 ml) water,, divided
- 1 teaspoon unflavored powdered gelatin
- 1 ½ cup (300 g) granulated sugar
- 1 cup (341 ml) light corn syrup
- ⅛ teaspoon (0.13 teaspoon) kosher salt
- 1 teaspoon vanilla bean paste, (1 ½ teaspoons vanilla extract can be substituted)
Instructions
- Place half the water in a large mixing bowl, and sprinkle the gelatin on top. Set aside.
- Place the remaining water in a small pot, along with the granulated sugar, corn syrup, and salt. Place the pot over medium-high heat and cook, occasionally swirling the pot gently, until the syrup registers 240 degrees F on a candy thermometer.
- Carefully pour the hot syrup over the gelatin mixture, and whip on medium low speed for 2 minutes.
- Increase the speed to high, and continue to whip until the sauce becomes thick, shiny, and white.
- Stir in the vanilla bean paste and transfer to a large mason jar.







Seriously amazed at all of the great things that come out of your kitchen! I haven't had marshmallow fluff (homemade or store bought) in so, so long. Now I want to make a s'mores ice cream sundae!
That sounds fabulous!!! I want one too!
I didn't even know you could make a homemade marshmallow sauce! Where have you been all of my life, and why don't you live right next door!? #lifecomplete
Haha and my life would be complete if I had all your fabulous comfort food dishes and beer pairings next door to me! We really need to make that happen 😉
Wow! This is the coolest thing ever! Marshmallow sauce?! I am so surprised it has no eggs in it too. I will have to try!
No eggs necessary! It whips up like a dream. Thanks Jessica! Hope you enjoy dear!
Marshmallow sauce? Girl you know you are insane in the best way possible!!
Haha thank you! I take that as a compliment 😉
I've been wanting to make my own marshmallow sauce for so many different things, like making the best fluffernutter ever! So glad you are sharing this recipe!
Yay! So happy you like it Danae! Have a great weekend sweetie!
I'm in love with the photos by the way! And that spoon! Where did you get it? 🙂
Oh thank you! I found the set on eBay!
This sauce looks so delicious! I love using marshmallow fluff in most of my buttercream frosting recipes. This would be a great alternative whenever I run of fluff out in my pantry.
I have never tried that but it sounds delicious! Thanks for the awesome idea Katy!
What an awesome recipe to have in your back pocket! I am saving this one for later!
Thanks Julianne! Hope you're enjoying your Friday night!
There's so many things you could do with this sauce, but I think I want to put it on everything. Great recipe.
Thanks so much Janette! Have a great weekend dear.
I'm way too familiar with "my kiddos are about to blast through the front door at any moment and all hell’s gonna break loose"! Lol! This marshmallow sauce is such a great idea Allie! I could think of tons of way to use a it. While the jarred version has it's merits, I think your sauce with a runnier consistency is way more versatile. My mind is racing with ideas! Thanks for sharing 🙂
I'm sure you can feel me Aida! Once the bus pulls away I can forget about getting anything else done, lol! Thanks so much for the sweet comment and I hope you have a great weekend!
YUM! I can think of so many good applications for this sauce. Pinning! I love the little gold spoon 🙂
Thank you so much Lindsey!
Totally amazing! I see a jar of this appearing in my kitchen very soon. 🙂
Thanks Kelly! I'm sure you could come up with some amazing ways to use this!
This looks heavenly! All the s'mores things you could make... the possibilities here are endless!
Yes! There are so many great uses, right? Thanks Medha!
Do you think you could substitute honey for the corn syrup? I like to eliminate corn syrup whenever possible, plus I like the taste of honey.
I like the taste of honey too. I haven't tried it myself but it seems like it could work! Good luck Judy, and thanks for reading!
Oh Allie, this is going to be a hit at our house!! Perfect for ice cream sundaes and as a brownie topping with crushed graham crackers! Love it!
Sounds great Mary Ann! I hope you and your boys enjoy!
Oh my goodness! This sauce is rockin' my world!!!
Thanks Amanda!
I made it but it separated and doesn't look quite right. I'm not sure what I did wrong... 🙁
Hey Erin! How long after you made it did it separate? Was it right away or had it sat for a day or so?
I believe it was overnight, may have separated before bit I'd not taken notice.
I see. Well I have seen it separate after several hours or days- it's definitely something that can be prevented by keeping it in the fridge. Refrigerated, it can keep for a few weeks without separating. I hope that helps!