• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Bake Play Smile
MENUMENU
  • Home
  • Shop
  • About Me
    • Meet Lucy
    • Work With Me
  • Contact me
  • Recipes
  • Main Dishes
  • Savoury Breads & Muffins
  • Salads & Sides
  • Soups
  • Bars Brownies & Slices
  • Cakes & Cupcakes
  • Christmas
  • Cookies
  • Desserts
  • Easter
  • Drinks
  • Healthy Treats
  • Sweet Breads & Muffins
  • Thermomix Recipes
  • Thermomix Cookies
  • Thermomix Bars Brownies & Slices
  • Thermomix Cakes & Cupcakes
  • Thermomix Chistmas Recipes
  • Healthy Thermomix Recipes
  • Thermomix Desserts
  • Thermomix Breads & Muffins
  • Thermomix Easter Recipes
  • Thermomix Lunch Box Recipes
  • Thermomix Main Meals
  • Thermomix Sides & Salads
  • Thermomix Soups
  • Recipes for Toddlers & Kids
  • Family Dinners
  • Healthy Snacks
  • Kids Parties
  • Freebies
  • Lunch Box Ideas
  • Sweet Treats
  • Extras
  • Baking 101 - Tips & Tricks
  • Blogger Resources
  • Recipe Videos
    • Facebook
    • Instagram
    • Pinterest
    • YouTube
menu icon
go to homepage
subscribe
search icon
Homepage link
  • Recipes
  • Thermomix Recipes
  • Shop
  • About
  • Contact
    • Facebook
    • Instagram
    • Pinterest
    • YouTube
  • ×

    Home » Recipes » Bars Brownies & Slices » Rice Bubble Marshmallow Slice

    Rice Bubble Marshmallow Slice

    Published: Sep 14, 2022 · Modified: Oct 23, 2022 by Lucy · This post may contain affiliate links · 3 Comments

    Jump to Recipe
    Two bars of puffed rice slice in front of a box of Rice Bubbles.

    Sweet, creamy and crunchy Rice Bubble Marshmallow Slice is made using only 3 ingredients - rice bubbles (or rice krispies), marshmallows and butter - and takes just 5 minutes to prepare.

    These homemade rice krispie treats taste just like LCM bars and are a great option for school lunch boxes or after school snacks!

    A stack of 3 pieces of marshmallow slice with puffed rice and sprinkled with 100's & 1000's.

    If your kids love store-bought LCM bars, then they're going to adore these homemade rice bubble marshmallow bars!

    A creamy no-bake rice bubble slice that takes just a few minutes to prepare.

    Just like my homemade Coco Pop Bars and Healthy LCM Bars, this Rice Bubble Marshmallow Slice is always a family favourite, perfect for kids birthday parties and a popular option in school lunch boxes.

    Table Of Contents

    • Why You're Going To Love This Recipe
    • What You Need
    • Equipment Required
    • Step By Step Instructions
      • Step 1 - Melt
      • Step 2 - Mix
      • Step 3 - Chill
    • Variations Of Rice Bubble Slice
    • Expert Tips
    • FAQ's
    • Related Recipes

    Why You're Going To Love This Recipe

    What's not to love about a quick and easy homemade rice bubble marshmallow slice recipe!?

    • 5 minutes prep time - it takes just 5 minutes to prepare this no-bake slice.
    • 3 ingredients - made using just rice bubbles, butter and marshmallows!
    • Thermomix or microwave versions - my rice bubble slice recipe can be made in the microwave or in a Thermomix. Alternatively, you can melt the butter and marshmallows in a saucepan on the stove-top over low heat.
    • Great for school lunch boxes - the kids LOVE this recipe!!! It will stay deliciously crunchy in lunch boxes all day long too.
    • Freezer-friendly - store the slice in the fridge for up to 1 week or freeze for up to 3 months. Defrost in the fridge (or place directly into lunchboxes).
    Homemade rice krispie treats in front of a packet of puffed rice with marshmallows on the side.

    What You Need

    Rice Krispie bars are made using just 3 ingredients (plus optional sprinkles/100s and 1000s!).

    Note: Scroll to the recipe card at the bottom for the ingredients quantities and full detailed method

    The ingredients for marshmallow slice with rice bubbles.
    • Marshmallows - use regular sized marshmallows (not jumbo or mini) like Pascall's brand. I like to use white marshmallows, however, you can use a combination of white and pink marshmallows if you prefer.
    • Butter - you can use salted or unsalted butter in this recipe.
    • Rice Bubbles - (also known as Rice Krispies) or any other brand of puffed rice. I recommend using Kellogg's brand as I find it gives the slice the crunchiest texture. Ensure you use a brand new unopened box of rice bubbles to avoid stale tasting slice!
    • Sprinkles or 100s & 1000s - optional, for decoration.

    Equipment Required

    Rice Krispie treats can be made in the microwave or a Thermomix, or even on a stove-top.

    • Baking tin - I recommend using an 18cm x 28cm (7 x 11 inches) rectangular baking tin lined with baking parchment paper.
    • Microwave or Thermomix - for melting the butter and marshmallows.
    • Large mixing bowl & spoon - for mixing.

    Step By Step Instructions

    Just 3 simple steps is all it takes to make these Kellogg's rice bubble marshmallow bars.

    Note: Scroll to the recipe card at the bottom for the ingredients quantities and full detailed method

    Step 1 - Melt

    Place the marshmallows and butter in a microwave safe bowl.

    Melt on 50% power for 2 minutes, stirring every 30 seconds.

    Note: Keep a close eye on the marshmallows as they will melt quickly.

    White marshmallows and butter in a bowl.

    Stir the marshmallows and butter until smooth and creamy.

    Note: Be careful as the mixture will be very HOT at this stage.

    Melted butter and white marshmallows in a bowl.

    Step 2 - Mix

    Place the rice bubbles into a large bowl.

    Pour the melted marshmallow and butter mixture over the rice bubbles.

    Melted white mixture on top of rice krispies in a bowl.

    Mix until well combined.

    Rice bubble mixture in a glass bowl.

    Step 3 - Chill

    Press the mixture very firmly into a prepared baking tin.

    Add sprinkles or 100s and 1000s over the top (optional).

    Chill in the fridge for a minimum of 2 hours.

    A rice krispie slice with 100s and 1000s on top, pressed into a slice tin.

    Variations Of Rice Bubble Slice

    Love a homemade rice bubble slice recipe?

    Here's a few tasty variations on this classic favourite!

    • Caramilk Rice Bubble Slice - everyone's favourite chocolate bar makes a yummy rice bubble slice.
    • Mars Bar Rice Bubble Slice - just 10 minutes prep time is all it takes to make this classic favourite.
    • Snickers Rice Bubble Slice - caramel, peanuts, chocolate and rice bubbles make a delicious 'Snickers' inspired slice.
    • Peanut Butter Rice Bubble Slice - a yummy slice combining peanut butter, rice bubbles and topped with chocolate!
    • Healthy Homemade LCM Bars - a healthier version of my rice krispie treats recipe using coconut oil and honey in place of marshmallows and butter.

    Expert Tips

    • Marshmallow size - use regular-sized marshmallows (like Pascall's brand) as they melt more easily than jumbo or mini marshmallows.
    • Marshmallow colour - I like to use white marshmallows, however, you can use a combination of pink and white if you prefer. Note: if you use pink and white marshmallows, the slice will have a slight pink colour to it.
    • Use a new box of Rice Bubbles - it's important to use a brand new (unopened) box of rice bubbles. Using rice bubbles that have been sitting opened in the pantry may not be as crispy and fresh and lead to a stale tasting rice bubble and marshmallow slice - no!!!!
    • Brand of puffed rice - while you can use any brand (or home brand) puffed rice that you like, I find that the Kellogg's brand of rice bubbles gives the crunchiest and best tasting result.
    • Press the mixture firmly into the tin - use the back of a spoon to press the mixture very firmly into the baking tin. This will ensure the slice stays together when cutting.
    • Storing - store the rice bubbles slice in an airtight container for up to one week. Storing the marshmallow rice krispies in the fridge keeps them deliciously crunchy.
    • Freeze - freeze in an airtight container for up to 3 months. Allow to defrost in the fridge before consuming.
    Homemade LCM bars with sprinkles on top in front of a packet of rice bubbles.

    FAQ's

    How do you cut rice bubble marshmallow slice without it cracking?

    I recommend chilling the slice for at least two hours. Remove it from the fridge 20 minutes before cutting with a sharp serrated knife. You can cut the slice either on a chopping board or while it's still in the baking tin.

    Is rice bubble marshmallow slice healthy?

    For a healthier version (without marshmallows or butter), I recommend using my Healthy LCM bars recipe.

    Can you make this slice dairy-free?

    Absolutely! Simply substitute the butter for a dairy-free alternative such as Nuttelex.

    An overhead shot pf pieces of rice crispy slice with sprinkles on top.

    Related Recipes

    Rice bubbles (or rice krispies) not only make a simple and tasty breakfast, they can also be used in SO many yummy baking recipes.

    Here's a few of my most popular recipes using rice bubbles:

    • Healthy LCM Bars | 4 Ingredient Recipe
    • Mars Bar Slice | 10 Minute Recipe
    • Caramilk Rice Bubble Slice
    • Snickers Slice

    WANT EVEN MORE DELICIOUS RECIPES? Subscribe to my newsletter or follow along on Facebook or Instagram. And if you love baking, then please come and join my Facebook cooking club group or subscribe to my YouTube channel

    A stack of 3 pieces of marshmallow slice with puffed rice.

    Rice Bubble Marshmallow Slice

    Sweet, creamy and crunchy Rice Bubble Marshmallow Slice is made using only 3 ingredients - rice bubbles (or rice krispies), marshmallows and butter - and takes just 5 minutes to prepare.
    5 from 4 votes
    Print Pin Rate
    Course: lunch box snacks
    Cuisine: Australian recipe, no bake slice
    Prep Time: 5 minutes
    Chilling Time: 2 hours
    Total Time: 2 hours 5 minutes
    Servings: 20 serves
    Calories: 285kcal
    Author: Lucy - Bake Play Smile

    Ingredients

    • 200 g marshmallows see notes
    • 75 g butter
    • 165 g (5 cups) rice bubbles or any puffed rice
    • 100s and 1000s/sprinkles to decorate, optional

    Instructions

    • Line the base and sides of an 18cm x 28cm (7 x 11 inches) rectangular slice with baking paper and set aside.
    • Place the marshmallows and butter into a large microwave safe bowl. Melt in the microwave on 50% power for 2 minutes (or until just melted), stirring every 30 seconds.
      If using a Thermomix: Cook the marshmallows and butter for 4 minutes, 80 degrees, Speed 1 (scrape down the sides of the bowl after 2 minutes).
    • Add the rice bubbles to the marshmallow mixture and stir until all of the rice bubbles have been coated in the marshmallows.
      If using a Thermomix: Add the rice bubbles to the bowl and mix for 1 minute 30 seconds, Speed 1, Reverse (using the spatula to help mix).
    • Press the mixture into the prepared tin and sprinkle with 100s and 1000s.
    • Chill in the fridge for a minimum of 2 hours.

    Notes

    RECIPE NOTES & TIPS
    • Marshmallow size - use regular-sized marshmallows (like Pascall's brand) as they melt easily than jumbo or mini marshmallows.
    • Marshmallow colour - I like to use white marshmallows, however, you can use a combination of pink and white if you prefer. Note: if you use pink and white marshmallows, the slice will have a slight pink colour to it.
    • Use a new box of Rice Bubbles - it's important to use a brand new (unopened) box of rice bubbles. Using rice bubbles that have been sitting opened in the pantry may not be as crispy and fresh and lead to a stale tasting rice bubble and marshmallow slice.
    • Brand of puffed rice - while you can use any brand (or home brand) puffed rice that you like, I find that the Kellogg's brand of rice bubbles gives the crunchiest and best tasting result.
    • Press the mixture firmly into the tin - use the back of a spoon to press the mixture very firmly into the baking tin. This will ensure the slice stays together when cutting.
    • Storing - store the rice bubbles slice in an airtight container for up to one week. Storing the marshmallow rice krispies in the fridge keeps them deliciously crunchy.
    • Freeze - freeze in an airtight container for up to 3 months. Allow to defrost in the fridge before consuming.

    Nutrition

    Calories: 285kcal | Carbohydrates: 60g | Protein: 4g | Fat: 4g | Saturated Fat: 2g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 1g | Trans Fat: 0.1g | Cholesterol: 8mg | Sodium: 35mg | Potassium: 70mg | Fiber: 1g | Sugar: 6g | Vitamin A: 94IU | Calcium: 7mg | Iron: 2mg
    Did you try this recipe?Mention @BakePlaySmileBlog or tag #BakePlaySmile!
    « Rolo Chocolate Chip Cookies
    Thermomix Aioli »

    Reader Interactions

    Comments

    1. Niah

      January 18, 2023 at 9:34 pm

      5 stars
      Opps found it thanks

      Reply
    2. Niah

      January 18, 2023 at 9:28 pm

      5 stars
      You never said how much butter you need to put into the slice

      Reply
      • Niah

        January 18, 2023 at 9:58 pm

        Never mind i found it

        Reply

    Leave a Reply Cancel reply

    Your email address will not be published. Required fields are marked *

    Recipe Rating




    Primary Sidebar

    I’m Lucy! A mum, a wife, a food blogger and a lover of all things to do with food! I love creating delicious, no-fuss Thermomix and conventional recipes the whole family will love. Classic baking favourites, lunch box snacks, quick and easy family dinners and more!

    More about me →

    Popular Kids Recipes

    • Milo Balls | 4 Ingredient Recipe
    • The Famous 100 Cookie Recipe | Condensed Milk Cookies
    • Easy Banana Muffins
    • Easy Jelly Slice
    • The BEST Chocolate Chip Cookies
    • Chocolate Hedgehog Slice | No-Bake

    BBQ Favourites

    • Chicken Rissoles
    • Spinach Cob Loaf
    • Cream Cheese Dip
    • Beef Rissoles
    Names of brands that Bake Play Smile has had recipes featured in.

    Summer Salads

    • Creamy Broccoli Salad With Bacon
    • Chang's Crispy Noodle Salad
    • Cypriot Grain Salad | Chef Recipe
    • Creamy Bacon, Egg & Potato Salad

    Thermomix Cookbooks

    Browse our range of Thermomix cookbooks.

    Footer

    ↑ back to top

    About

    • About
    • Privacy Policy
    • Work With Me
    • Accessibility
    • Terms Of Use

    Newsletter

    • Sign Up! for emails and updates

    Contact

    • Contact
    • Shop the store

    Copyright © 2021 Bake Play Smile

     
    Manage Cookie Consent
    To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
    Functional Always active
    The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
    Preferences
    The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
    Statistics
    The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
    Marketing
    The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
    Manage options Manage services Manage vendors Read more about these purposes
    View preferences
    {title} {title} {title}