Easy Homemade Microwave Marshmallow Fondant
Fondant sure looks amazing on cakes, but it never really tastes that great, not to mention it’s not the cheapest to buy pre-made. Our Easy Homemade Marshmallow Fondant solves all of that.
It tastes amazing, as anything made from marshmallows would, its super easy to make, and it’s completely budget friendly. It can be coloured any colour you like ( I used food colouring gel) and even flavoured using flavour extracts if you prefer.
This fondant recipe is a must try next time you make a birthday cake (or even a just because cake; who needs an excuse to eat cake?).
This recipe can easily be increased or decreased depending on how much fondant you need, just double or halve the ingredients.
How to store marshmallow fondant
Any leftover marshmallow fondant will keep extremely well wrapped and stored in an airtight container at room temperature. How long the fondant will last before it goes hard depends on the environment it’s kept in, but it should last several months if stored correctly.
How to make marshmallow fondant
To make the fondant, first add white marshmallows and a little water to a large, microwave safe mixing bowl. Microwave until the marshmallows melt, then give the marshmallows a really good mix until they are nice and smooth.
Gradually add the icing sugar to the marshmallows, mixing with a spoon at first, then switching to your hands once the fondant becomes too difficult to mix. Add extra icing sugar if the fondant is still too wet; it should feel much the same as ordinary fondant.
Add the food colouring if you are using it, and knead it through the fondant. Use your marshmallow fondant just as you would any other fondant.
Other marshmallow recipes
There are so many uses for marshmallows, aside from eating them of course! Take a look at the below list for more delicious marshmallow recipes:
- Unicorn Weetbix marshmallow slice
- Weetbix marshmallow slice
- Chocolate marshmallow mug cake
- Wagon wheel slice
- Toasted marshmallow cupcakes
- Marshmallow brownie cupcakes
Marshmallow fondant recipe

Easy Homemade Microwave Marshmallow Fondant
Ingredients
- 115g white marshmallows
- 1 tablespoon water
- 225g icing sugar
- Food colouring
Instructions
Add the marshmallows and water to a large microwave safe mixing bowl and melt using the microwave. Mix well until smooth.
Gradually add the icing sugar, mixing with a spoon at first, and switching to using your hands once it gets too difficult. Add extra icing sugar if the fondant is still too wet.
Add the food colouring if using, knead until smooth and use like any other fondant.