Desserts | Recipes

Marshmallow Fluff Rice Krispie Treats

An easy recipe with a short list of four ingredients requires only 15 minutes of preparation!

About the recipe

I have been looking for simple desserts that are fast, easy, and fun to do with my children. I made this Rice krispie treat marshmallow fluff recipe that the whole family loved.

My schedule is always tight, juggling home school teaching, house chores, and caring for my little toddler. It had been a long time since we had a good time in the kitchen with the kids.

I find this sweet treats a great school snack for the kids.

Why this Recipe Works

Kid Friendly

A kid-friendly no, baking recipe would be a good classic recipe. A recipe with simple steps that my eldest daughter, 8, could guide the rest with minimal supervision from mum.

In addition, all four would have something to help with happily. I remembered rice Krispies and marshmallows usually combined to make an easy treat. 

Not messy 

The waiting time is the only catch in this simple rice cereal treats with this recipe. You have to set the tray aside for around two hours, enabling the bar to become firm.

There’s a great sigh of relief since we encountered a few dishes waiting at the sink at the end of the recipe. There’s little cleaning to be done as the mixture is not messy or sticky.

A good rubber spatula is leaves with almost very clean bowls. 

Very tasty 

With great eagerness, the children waited to indulge in a treat that they had been actively involved in the preparation.

As I watched the children happily chatter and munch the treats, I wished I had added more pieces of chopped marshmallows. They kept of picking out the sticky marshmallows and eating them.

My young recipe judges beamed with joy each time they found a marshmallow in their slices. 

One of the recipe tasters kept asking if we had added some ice cream to the treats and declared that his birthday must have the sweet, chewy, bake treats. He confirmed that these some of the best rice krispie treats he had ever eaten.

Firm enough to be transported 

It was fulfilling to see the marshmallow spread hold the classic rice krispie treats without crumbling.

This makes these marshmallow fluff rice krispie treats treat good for birthday parties, potlucks, or picnics. I stored my homemade bake desserts in an airtight container and leave them at room temperature to maintain freshness and crispness.

The Ingredients

This recipe uses a few ingredients which can easily be found in your pantry. The ingredients are :

Rice Krispies 

These form the biggest part of the recipe; you need about 5 cups of the airy cereals. You can just pick any generic brand from the grocery stores


Butter adds moisture to the rice Krispies, making them soft and chewy. The butter also adds a milky flavor to the Rice Krispie treats.

Marshmallows (preferably mini-sized)

These contain the sugar that sweetens the treats and the gelatin that becomes gooey, sticky, and stretchy when melted to become the marshmallow cream mixture. It is the binding agent in the recipe. A bag of marshmallow is enough for this recipe.

Note: The secret ingredient would be salted butter.

If you are using unsalted butter, then you can sprinkle a pinch of salt with the combination of marshmallow creme and the rice Krispies.


The Equipment

Saucepan: A heavy-based sauce or a large pot is the best equipment for melting the marshmallow and butter mixture. It will keep the mixture from burning. 

Spatula: It’s useful in scraping off the creamy mixture that remains in the bowl, thereby not wasting ingredients. 

Mixing bowl; a large bowl is undoubtedly important as mixing the marshmallow paste with the rice treats is made easy since none of the mixture remains in the corners as would in a square mixing bowl. 

Baking tray:  a 5-inch rectangular nonstick shallow pan was the right size for the amount of marshmallow rice Krispie mixture. 

Chopping board: a sturdy chopping surface is required as the solid bar is divided into sizable squares.  

Knife or cookie cutters: You might use a knife to cut out regular shapes, although cookie cutters will bring in the aspect of creativity. 


Rice Krispies 

You can substitute rice Krispies with crushed cornflakes, granola, toasted oats, and crushed crackers. 


Marshmallows act as a binding agent in the recipe and can be substituted with honey, date paste, tamarind paste, or maple syrup. 


Butter can be substituted with peanut butter, almond butter, or coconut oil.

How to make this recipe 


The recipe involves melting butter and marshmallows on medium-low heat into a smooth-flowing cream. The cream is poured into a bowl of Krispies. All the ingredients are mixed till all rice Krispies are coated with the cream. 

The mixture is transferred into a tray and gently pressed on the tray. You can choose to line your tray with parchment paper so that the press mixture doesn’t stick to the tray.

I used the nonstick cooking spray to prevent the mixture from sticking to the tray

At this point, you can decorate the bar with some chopped-up marshmallows!


Marshmallow Fluff Rice Krispie Treats

This Rice Krispie Treat recipe uses a short list of four ingredients requiring only 15 minutes of preparation!
Prep Time 15 mins
Cook Time 3 mins
Course Dessert
Cuisine American
Servings 12 people
Calories 102 kcal


  • Saucepan
  • Spatula
  • Mixing bowl
  • Baking Tray
  • Chopping Board
  • Knife


  • 5 cups Rice Krispies
  • 2 cups of mini marshmallow
  • 6 Tablespoons of Butter


  • Grease a shallow baking tray (to give dimensions)
  • Measure out the ingredients and set aside in bowls  
  • In a saucepan, melt the butter over low heat and add the marshmallows. Stir the marshmallow cream mixture for about a minute and a half. 
  • Pour the cream into a bowl containing the rice Krispies and mix with a spatula ensuring all the Krispies are coated with the cream.
  • Gently transfer the mixture into the greased tray, spread, and press onto the tray. Add some chopped-up marshmallows and continue adding the last layer of the mixture.
  • Set aside the tray, and let the mixture rest for two hours to set firmly.
  • Move the set bar onto a chopping board; using a sharp knife or cookie cutter, cut out your desired shapes.


Ensure you give it enough time to set before cutting in into your desired shapes

Can you freeze?

It was honestly hard to have extra treats for freezing. My recipe tasters gobbled everything in less than two days. But in case you need to make a huge batch ahead of an upcoming event, the treats freeze beautifully.

First, it’s advisable to cut the traditional rice krispie treats into your desired shapes and place them on baking paper or a sheet. Place the cut-out treats in your freezer overnight.

The following day, remove the treats and carefully put them in a ziplock bag or a plastic wrap. They can freeze for about three months.


How to Store

The marshmallow Rice Krispie treats should be stored in an airtight container and placed in the refrigerator.

Though as delicious as they are, the little ones ate them up in less than two days.

Frequently asked questions –  FAQs 

Why are my Rice Krispies falling apart?

Rice Krispie treats fall apart when you put too many marshmallows or too much butter. It is important to find the right ratio of marshmallows and butter to the rice Krispies. 2 cups of marshmallows is enough for 6 cups of Rice Krispies. 

How long can you keep marshmallow Rice Krispies treats?

About two days in the refrigerator or in a cool place as long as they are sealed in an airtight container. 

How long does it take for the Rice Krispies to set?

It takes about 2 hours for the treats to set well. It could probably take longer in climates with higher temperatures, such as 34 degrees Celsius, and high humidity levels as well. If you reside in such areas, it is recommended to place your tray in the coolest part of your kitchen. 

Expert Tips

When melting the butter and marshmallow, it’s highly recommended that you use a gas stove and a saucepan as compared to a microwave.

This technique will allow you to closely observe the melting mixture and regulate the heat. 

When overheated, the marshmallows will burn, and this causes the marshmallow Rice Krispy treats to become hard.

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