If you need a fun boost going back to school, these funfetti marshmallow bars are the answer. They are super simple to make, and so much fun to create with kids. They’re made with multigrain cereal loops and Epic Snax’s Giant Toastin’ Marshmallows for a particularly gooey texture, then finished with colourful jimmies to add a pop of colour. Above all, they are perfect cut into squares and add to lunch boxes for a sweet lunchtime treat that’s bound to be loved.

Why I love these Funfetti Marshmallow Bars:

  1. They require no baking
  2. Only 3 key ingredients
  3. Great to make with kids
  4. Perfect for lunch boxes
  5. Gooey, crunchy and delicious
A stack of 4 cereal marshmallow squares can be seen on a neutral backdrop. Marshmallows, funfetti sprinkles and more funfetti marshmallow bars can be seen dotted around.

What you’ll need:

This recipe is so simple to make, and is a firm favourite with kids in the kitchen because it only uses 3 key ingredients! Here’s what you’ll need:

  1. Nestlé Cheerios. A little different to Rice Krispies which are usually used, cheerios are so easy to find in the supermarket. If you’re looking for a healthier alternative, Doves Farm also have an Organic Ancient Grain version that’s great as an alternative.
  2. Epic Snax Giant Toastin’ Marshmallows. These marshmallows are truly the best for establishing that dreamy gooey, chewy texture. Simple melt and stir in!
  3. Colourful jimmies. Finding the right type of jimmies is crucial for this recipe to avoid colour bleed. These are the ones I use.

3 tips for making these Funfetti Marshmallow Bars:

While these funfetti marshmallow bars really are a breeze to make, there are a few things that help to ease the process while in the kitchen:

  1. Use a non-stick baking tin. First of all, you’ll want an easy-release for the sticky texture. I recommend you use a loose-bottomed square tin like this one, lined with baking parchment, to you can slide your bars out with ease.
  2. Wear latex gloves when handling the marshmallows. Secondly, wearing latex gloves is equally as important due to the fact that marshmallows are STICKY when melted down. Using gloves, for examples, means there’s less mess and it’s even easier to squash the mixture into the tin and level out the surface.
  3. Work quickly when mixing in your rice krispies. Thirdly, given that the mixture will firm up quickly consequently making it more difficult to work with. Mix everything thoroughly, then place in the tin and level out the top as quickly as you can.
A packet of Epic Snax's Giant Toastin' Marshmallows can be seen on a silver baking tray set on a white neutral backdrop. Funfetti marshmallow bars, funfetti sprinkles, cheerios and marshmallows are dotted around the edges of the frame.

Flavour variations:

Try something a little different and add some additional flavours to your Halloween Rice Krispie Treats:

1. Different cereal. Switch up your cereal and use Rice Krispies, crushed Shreddies or even Cornflakes.
2. Dip them in chocolate. Another thing to consider for extra indulgent marshmallow bars is dipping your bars in a chocolate of your choice. Additionally, you could drizzle chocolate sauce over for a simple and less sweet version.
3. Mix up your sprinkles. If you’re looking to make these for a certain occasion, choose a themed sprinkle instead of Jimmies – just make sure they don’t bleed or lose their colour when added to the mixture.

See how I made these over on Instagram!

A cereal square sits in the middle of a white backdrop with funfetti sprinkles on top and some in a small bowl in the bottom left hand corner. A bowl of cheerios can be seen in the top left hand corner and marshmallows in the bottom right hand corner.

Funfetti Marshmallow Bars

These funfetti marshmallow bars are the perfect back to school treat that will fit in any lunch box! They're fun, easy to make and tasty.
Prep Time 10 minutes
Total Time 30 minutes
Course Dessert, Snack
Servings 16 squares


  • 45 g unsalted butter
  • 300 g Epic Snax Giant Toastin' Marshmallows
  • 180 g Nestlé Multigrain Cheerios
  • 100 g Jimmie sprinkles


  • Melt the butter in a large, light-coloured saucepan over a low heat.
  • Dump your marshmallows in and cook gently. Stir constantly, until they’ve all melted and are completely blended, with no lumps.
  • Take the pan off the heat and mix in your multigrain cheerios and sprinkles immediately, mixing to make sure they’re all coated and glossy.
  • Wearing latex gloves, or coating your hands in a little melted butter to avoid your hands getting really sticky, press the mixture into a 9 x 9-inch square tin.
  • Leave to set, then cut into 16 crunchy squares and enjoy!
Keyword cheerios, funfetti, jimmies, lunchbox, marshmallow, snack, sprinkles

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