Chocolate Marshmallow Fondant
This homemade chocolate marshmallow fondant is a delicious sugar paste recipe with the taste of marshmallow and chocolate. Made with real chocolate and cocoa powder for that rich chocolate taste you can use this to cover cakes, cookies, or cupcakes.

This is my sixth fondant recipe. I know!! Well, not all fondant works with every project. Plus, classic fondant does have a long list of ingredients that are not easy to find or not worth a one-time investment. Do you like the taste of fondant? The homemade is much better than commercial which tastes like chalk.
About this fondant
This chocolate marshmallow fondant is absolutely delicious. Why? Well, it’s made with chocolate, marshmallows, and lots of powdered sugar. The cocoa powder helps cut down on the sweetness of the powdered sugar.
The gelatin in marshmallows is what gives this fondant that stretch and the powdered sugar is what gives it the body. So there has to be a perfect balance of the two.
It is very tempting to add more powdered sugar when kneading but DO NOT ADD MORE THAN WHAT IS MENTIONED IN THE RECIPE. Instead, let the fondant be soft and slightly sticky. Chill it for a few hours then if you think you need more powdered sugar knead in some more.
Ingredients and substitutes
- Marshmallows – Well, it’s marshmallow fondant. So, yes we need marshmallow. Use small or mini ones, but mostly use similar size so they melt evenly. I often use large ones because that’s what I find – so yeah you can use large – just takes longer to melt.
- Chocolate – Yes, this one has real chocolate, so it gives a rich chocolaty taste.
- Light corn syrup – In the other marshmallow fondant you notice we used water. But here we can’t use water to melt the marshmallow with chocolate. Why? Well you know what happens when you mix chocolate and water, right? It seizes.
So, we have to use something other than water. I like corn syrup because it’s similar to making modeling chocolate. And yet, if you can’t find light corn syrup – you can use glucose syrup or golden syrup. I think honey will work as well but have not tried it yet. - Cocoa Powder – Using only chocolate will give us a very light chocolate based fondant. So, we have to add some cocoa powder. Cuts the sweetness too.
- Hot water – Now, this is the secret to that dark chocolate color you get with this recipe. So, don’t omit the hot boiling water. It’s what melts the cocoa powder and brings out that rich chocolate color.

Chocolate marshmallow fondant
- Chop chocolate into small pieces or grate so it melts quickly.
- Smear the microwave-safe bowl with half the veg shortening
- Place chocolate and marshmallows in the bowl along with corn syrup and vanilla extract
- Microwave at 30-sec interval for about a minute or two until completely melted.
- Stir slowly – it’s a sticky soupy mix but all the chocolate must be melted
- Add one cup powdered sugar – stir
- Then add the cocoa powder and the hot boiling water – combine well (the hot water will dissolve the cocoa powder and give this deep dark color)
- Continue adding more powdered sugar while mixing with a spatula.
- Then transfer to a working surface and start kneading.
- Add the remaining veg shortening and powdered sugar as needed
- It is important not to add too much, powdered sugar as will make the fondant too dry.
- The consistency of the fondant will still be slightly sticky but still pliable. (once the fondant rest you can always add more fondant so DO NOT ADD TOO MUCH POWDERED SUGAR)
- Divide the fondant into two-disc and place in a ziplock or storage bag. This will prevent it from drying.
- Chill in the refrigerator for at least three hours for the fondant to firm up.

How to use fondant
- Thaw and bring fondant to room temperature.
- Cold fondant is difficult to knead because the chocolate hardens. You can thaw longer or heat in the microwave for 10 seconds.Tip – (10 SECONDS IN THE MICROWAVE FOR FONDANT IS A LOT SO DON’T DO MORE THAN 10 SECONDS AT A TIME)
- Knead to a smooth soft pliable consistency.
Tip – vegetable shortening on your hands when kneading helps give a smooth shiny consistency. - Roll on a surface dusting with powdered sugar or cornstarch – then dust off excess powdered sugar. Alternatively, you can smear vegetable shortening on your surface for kneading.
More fondant recipes
- See all Fondant recipes
- Best EVER Homemade Fondant
- Homemade Vegetarian Fondant Recipe From Scratch
- Perfect Homemade Black Fondant Recipe
- Best Homemade Marshmallow Fondant
- Chocolate Marshmallow Fondant
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Chocolate Marshmallow Fondant
This homemade chocolate marshmallow fondant is a delicious sugar paste recipe with the taste of marshmallow and chocolate. This simple, easy and effortless recipe is made with real chocolate and cocoa powder for that rich chocolate taste. Whether you cover a cake, cookies or cupcakes this chocolate fondant is always a real treat.
Ingredients
- 16 oz (450 g) Marshmallow
- ¼ cup (50 g) Vegetable shortening
- 4 oz (113 g) Dark chocolate
- 2 tbsp (30 ml) Light corn syrup
- 1 cup (85 g) Cocoa powder
- 6 ½ cups (800 g) Powdered sugar
- 2 tbsp Hot boiling water
- 1 tsp Vanilla extract
- 2 cups (240 g) Powdered sugar as needed for kneading
Method
- Chop chocolate into small pieces or grate so it melts quickly.
- Smear the microwave-safe bowl with half the veg shortening
- Place chocolate and marshmallows in the bowl along with corn syrup and vanilla extract
- Microwave at 30-sec interval for about a minute or two until completely melted.
- Stir slowly – it's a sticky soupy mix but all the chocolate must be melted
- Add one cup powdered sugar – stir
- Then add the cocoa powder and the hot boiling water – combine well (the hot water will dissolve the cocoa powder and give this deep dark color)
- Continue adding more powdered sugar while mixing with a spatula.
- Then transfer to a working surface and start kneading.
- Add the remaining veg shortening and powdered sugar as needed
- It is important not to add too much, powdered sugar as will make the fondant too dry.
- The consistency of the fondant will still be slightly sticky but still pliable. (once the fondant rest you can always add more fondant so DO NOT ADD TOO MUCH POWDERED SUGAR)
- Divide the fondant into two-disc and place in a ziplock or storage bag. This will prevent it from drying.
- Chill in the refrigerator for at least three hours for the fondant to firm up.
- Thaw and bring fondant to room temperature.
- Cold fondant is difficult to knead because the chocolate hardens. You can thaw longer or heat in the microwave for 10 seconds.Tip – (10 SECONDS IN THE MICROWAVE FOR FONDANT IS A LOT SO DON'T DO MORE THAN 10 SECONDS AT A TIME)
- Knead to a smooth soft pliable consistency. Tip – vegetable shortening on your hands when kneading helps give a smooth shiny consistency.
- Roll on a surface dusting with powdered sugar or cornstarch – then dust off excess powdered sugar. Alternatively, you can smear vegetable shortening on your surface for kneading.








what kind of cocoa powder do you use?
Hey Kate. I always use Dutch-processed cocoa powder. THanks
Hey mam, you’ve posted a lot of fondant recipes. And I’m confused which one to make. I wonder which fondant recipe do you often use for your cake decor?
Hey Ega. Every fondant is different.
There is one from scratch that has quite a few ingredients that mostly Cake Decorators would have but does not make sense to buy if you making it just once.
If you making fondant for the first time I highly recommend marshmallow fondant as it uses only two ingredients.
There is a vegetarian for those that can’t have gelatin
And then there is brown/chocolate or black. If you want brown or black it’s best to make them from scratch rather than adding too much gel color.
So each one has its own use. I hope that helps.
How to store the fondant. In room temperature or in fridge mam?
You can keep it at room temperature, in good weather it will last for a long time.
Hi
I would like to substitute coconut oil for the vegetable oil. Has anyone tried that successfully?
Libby – there is no coconut oil or veg oil in this recipe. There is shortening and it’s different!
I’m sorry, I meant shortening. I did substitute the vegetable shortening for coconut oil (cold pressed, organic) and it worked wonderfully. And it gave the chocolate fondant a yummy coconut taste. My daughter loved her dragon egg for Easter. I used the fondant to make ‘dragon scales’ and to cover the horrendous joining job I did with the hollow egg after I cut it open to put in the chocolate dragons and candied jewels.
Ah Libby. Happy to hear you had great success with this recipe. I do like the combination of coconut and chocolate. Your Easter cakes sound fun and wonderful. Happy Eater.
I finished kneeding (about 10 min) but could not get it to the stretchy consistency I usually get for regular marshmallow fondant. I have it tin the fridge but I’m worried it will break too easily. I only added 2 cps of p.sugar because it was getting a bit dry. Any suggestions?
Jaime.. why did you add more powder sugar if it was getting a bit dry? you need to add less not more powder sugar. When it’s rested try kneading it well with wet hands. Just a little water on your hands (not much) and knead it well. Hope it helps it.
Do you have a recipe for white chocolate marshmallow fondant?
I am trying to make a master yoda cake.
Thanks,
Lynn
NO Lynn. I have six recipes for fondant but no white chocolate. I think you can add white chocolate instead of dark chocolate in my Chocolate Marshmallow Fondant.
Will this cover a three layer cake? (they are equal sizes)
Do you mean one cake with three layers? or three tier cake. It really depends on how thick or thin you roll the fondant. For me this would easily cover an 8 + 6 four inch tall cakes and have spare for decorations.
Lots of sugary chocolate goodness, but just perfect for cake decorating. Ideal for creating a smooth finish, and so easy to make.
Yes, it is sweet but that is the nature of fondant.. Love the smooth finish
I agree fondant is too sweet but it sure does look nice on your cakes. I need to spend more time on your site. You have so many great tutorials for making cakes!
Well it is mostly powder sugar so definitely very sweet but again.. makes those cakes look flawless..
Is this chocolate fondant recipe enough to cover two cakes?
I can! It really depends on how thick or thin you roll the fondant. For me this would easily cover an 8 + 6 and have spare for decorations.