Foolproof Gluten Free Marshmallow Fudge Recipe With Easy Homemade Fluff (2024)

This gluten free fudge recipe is smooth as silk, with tons of rich chocolate flavor. The sugary sweetness is balanced with just the right amount of buttery flavor and rich, melted chocolate.

Serve it chilled until cold, or at cool room temperature for the type of fudge you can really sink your teeth into!

Why is this the best gluten free no-fail fudge recipe?

This classic fudge recipe is adapted from the recipe for fantasy fudge on the side of the Kraft brand's Marshmallow Creme, but with dark chocolate instead of semi-sweet chips. And we begin with a batch of our homemade version of that marshmallow goodness.

This fudge is still solid even as it warms up, which is exactly the consistency you want. Fudge is usually served chilled, but it shouldn't melt at cool room temperature.

If you don't count the time it takes to set up in the refrigerator, this fudge only takes minutes to make. All you need is a candy thermometer; if you don't have one yet, now it's finally time. 🌡

This recipe won't fail. And it won't stress you out!

How to make marshmallow fluff for this no fail fudge recipe

The marshmallow mixture has just a few essential ingredients: egg whites, sugar, and water. The recipe also calls for cream of tartar, salt, and vanilla, but you can make the fluff without them.

Whip the egg whites

We begin by whipping raw egg whites until they form soft peaks when you pull the whisk away. The peaks shouldn't seem dry or crumbly at all, and should fall over on themselves when you turn the whisk upright.

If you're concerned about the raw egg whites, you can always use egg whites from the carton, which are already pasteurized. They may not form perfectly stable peaks when you whip them, so your fluff will be a little more limp and soft, but the recipe will still work.

Cook the sugar

Next, cook the sugar solution to softball stage (240°F). The least expensive candy thermometer is all you need. Here's the type of candy thermometer you see in the photos and video.

Next, pour the hot sugar mixture down the side of the mixer bowl, taking care to avoid hitting the whisk as it whips, or the sugar mixture will splatter. Then whip whip whip.

Once the fluff/creme is made, you can put it in a sealed container and store it in the refrigerator for at least 3 days. This fudge is only moments away once the fluff is done.

If you remember how easy it was to turn homemade gluten free corn free marshmallows into rice krispie treats, then you won't be at all afraid of making this fudge (marshmallows set up with gelatin, and fluff uses egg whites for structure – they're otherwise nearly the same).

And if you thought you didn't love marshmallow creme, then you haven't had homemade marshmallow creme.

Corn-free marshmallow fluff fudge

This marshmallow fudge is made using cream of tartar in the fluff recipe, to help stabilize the sugar as it cooks. Corn syrup is often used when you're cooking sugar as a stablizier, which prevents the sugar from forming crystals as it heats.

I don't mind using corn syrup. But I know that lots of people either must avoid corn products, or simply don't like even the idea of corn syrup (that's why our gluten free pecan pie is made without corn syrup, after all!).

If you don't have cream of tartar, you can replace it with a tablespoon of light corn syrup, if that works for you. You can also try using 1 teaspoon of freshly squeezed lemon juice.

Tips for making the best gluten free marshmallow fudge

If you're new to cooking sugar, for the marshmallow fluff or the marshmallow fudge itself, here are some tips to ensure success the very first time.

• Cook sugar on medium-high heat, at most. If your stovetop runs hot, use low heat and be patient.
• A simple, analog candy thermometer is a must-have to cook sugar. Cooking for fixed time periods can lead to broken mixtures.
• For easily scoopable marshmallow fluff/creme, chill it for up to a day ahead of time.
• Slice your fudge into squares when it's not quite rock hard.
• Run your cutting knife under warm water before slicing your fudge.
• Nervous? Try a half recipe of fudge first, until you get the hang of it.
• Be sure you're using evaporated milk, not sweetened condensed milk! Holy toothache!

Gluten free fudge stir-in ideas

This is a simple, classic fudge recipe, that suits my family just as it is. But you can also make it much more interesting by adding flavorings and even some mix-ins.

As you're folding the marshmallow fluff into the mixture, add up to 1 full cup of mix-ins. My favorites are peanut butter morsels, white chocolate morsels, and even crushed Butterfinger candies.

How to make rocky road no fail fudge

You can make nearly anything chocolate into rocky road chocolate by mixing in walnuts, chocolate chips, and mini marshmallows. Instead of miniature marshmallows, just add some additional swirls of marshmallow creme.

In fact, our no churn rocky road ice cream is also made with a marshmallow creme base—and that's been a gluten free dairy free fan favorite for years!

How to make peppermint marshmallow fudge

There's plenty of vanilla extract in this fudge recipe, both in the marshmallow creme recipe and in the fudge itself. Try making it peppermint by replacing one of the vanilla extracts with peppermint extract.

You can also try crushing some candy canes and adding the crushed bits to the fudge as you're folding in the marshmallow creme. Or just sprinkle crushed candy canes on top instead of more marshmallow.

How to store this delicious fudge

The sugar in this fudge recipe keeps it fresh for quite a while. You can store it cut into squares, or uncut in a single slab.

If you'd like to store it in squares, pile the squares into a tightly sealed container with rigid sides. Refrigerate for weeks and it should still taste fresh.

To store it in a single slab, remove it from the pan and peel off the foil. Wrap it tightly in freezer-safe wrap and store it in the refrigerator or freezer for even longer.

FAQs

Are marshmallows gluten free?

Most commercially available brands of packaged marshmallows are gluten free, since they're made with very few ingredients and none of them is necessarily gluten-containing. But you should always read labels, and call the company if you're not sure.

Why is my fantasy fudge grainy?

If your fudge, and maybe your marshmallow creme before it, is grainy, your sugars have probably crystallized. Adding cream of tartar or another acid helps prevent crystallization of cooked sugar.

Crystallization happens when some sugar comes out of solution during cooking, dries out, and becomes a grain again. If it returns to the rest of the mixture as a dry crystal, it starts a chain reaction in the rest of the cooking sugar.

Why is my fantasy fudge too soft?

If your fudge is setting up too soft, you probably didn't cook your sugar to the softball stage, either in the fluff/creme or when you boiled the butter and sugar for the fudge itself. Be sure you're using a candy thermometer, or you know how to use the cold water test for cooking sugar.

Honestly, even though you may find using a candy thermometer to be intimidating, it takes all the guesswork out of cooking sugar. By the time you drop some cooked sugar into a glass of cold water to see if it's the proper “soft ball” consistency, your sugar is usually overcooked and hard!

Can you freeze marshmallow fluff fudge?

Yes! You can freeze marshmallow fluff fudge. If I'm going to freeze fudge, I prefer to freeze it before I slice it.

Why is my gluten free fudge oily?

Be careful not to have the heat too high under the butter and sugar mixture when you're making the fudge. If your heat is too high, you risk burning the sugar before it hits the right temperature—and your butter may separate.

If your butter separates during cooking, your fudge mixture won't be fully combined and your fudge may seem oily. Patience is a virtue when cooking sugar!

Substitution suggestions for no fail fudge ingredients

Gluten free dairy free marshmallow fudge

Replace the butter with vegan butter, to keep that butter flavor but get rid of the dairy. Miyoko's Kitchen and Melt brands are best.

In place of cow's milk evaporated milk, try using coconut milk evaporated milk. Or just simmer some of your favorite unsweetened nondairy milk on the stovetop over low heat until it's reduced by at least half.

Can you make gluten free egg free marshmallow fudge?

Maybe! You may be able to replace the marshmallow fluff, which is made with egg whites, with gluten free marshmallows (made with gelatin).

That's a lot of granulated sugar, huh?

I don't know how to make this recipe without granulated sugar. If you'd like to make candy recipes with alternative sugars, I suggest seeking out a keto blog.

I don't recommend replacing any of the granulated sugar with coconut sugar, which is heavier and much grainer. Remember, to your body, sugar is sugar!

How to make this easy no fail marshmallow fudge recipe, step by step