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    Home » Recipes » Bars Brownies & Slices

    Homemade LCM Bars

    A picture of Lucy the baker from Bake Play Smile.
    Modified: Aug 20, 2026 · Published: Oct 19, 2020 by Lucy Mathieson · This post may contain affiliate links · 21 Comments
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    A pile of LCM Bars made with Rice Bubble and 100's and 1000's throughout.

    Healthier and homemade LCM Bars are the ultimate 4-ingredient lunchbox fix.

    No marshmallows, no butter, just honey, rice bubbles and a good hard press into the tin. If you're on a no-bake kick, try my Healthy Coco Pop Bars or Peanut Butter Crunch Bars next.

    Rice bubble slice with sprinkles on a plate

    A Quick Look At The Recipe

    ✅ Recipe Name: Healthier LCM Bars
    🕒 Ready In: 5 minutes prep + 3 hours chilling
    👪 Serves: 20 bars
    🍚 Calories: 242kcal per large serve
    🥣 Main Ingredients: rice bubbles, honey, coconut oil, sprinkles
    📖 Dietary Info: dairy-free, nut-free, easily made gluten-free
    ⭐ Why You'll Love It: just 4 pantry staples, no baking and no marshmallow sugar hit.

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    Omg these taste amazing, I can't believe they are so easy!!

    - Emma

    These LCM bars vanish fast in this house. Pack them alongside a Weetbix Slice or a batch of chewy homemade Muesli Bars for easy lunchbox wins, or go full old-school with my Caramilk Rice Bubble Slice.

    Jump to:
    • A Quick Look At The Recipe
    • Why You're Going To Love This Recipe
    • Homemade LCM Bars Ingredients
    • Variations
    • How To Make Healthier LCM Bars
    • Recipe Tips
    • Homemade LCM Bars FAQs
    • More Rice Bubble Recipes You'll Love
    • Homemade LCM Bars

    Why You're Going To Love This Recipe

    • Just 4 ingredients - no marshmallows, no butter, nothing fancy.
    • No-bake and stupidly easy. Little hands can do the mixing while you put your feet up.
    • Dairy-free and nut-free, so they're safe for pretty much every school lunchbox.
    • Freezer-friendly, because sometimes you need a treat stash on standby for the 3pm meltdown.

    Homemade LCM Bars Ingredients

    Just 4 simple pantry staples turn into a proper lunchbox treat.

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

    The ingredients for healthy rice bubble bars.
    • Rice bubbles (puffed rice) - grab a fresh box for maximum crunch. Need it gluten-free? Check the label, some puffed rice sneaks in malt.
    • Honey is the glue holding this whole thing together, so don't skimp on it. Swap it for maple syrup or rice malt syrup if you want these vegan-friendly.
    • Coconut oil - melt it fully before mixing in. If it's not properly liquid, it won't coat the rice bubbles evenly and your bars will end up patchy and crumbly.

    Variations

    • Fibre Boost: stir through 2 tablespoons of chia or hemp seeds. The grown-ups in the house will love this one.
    • Skip the sprinkles and stir through dried cranberries, sultanas or sunflower seeds instead for a fruity swap.
    • Vegan Option: swap the honey for maple syrup or rice malt syrup.
    • Want a protein hit after sport? Stir a scoop of vanilla protein powder in with the honey. It still tastes like a treat.
    • Choc Crunch: mix in mini dark choc chips (and flaked almonds too, if nuts are allowed).
    • Kids after the old-school buttery, marshmallow-style LCM? Make my Rice Bubble Marshmallow Slice instead for that extra gooey, nostalgic treat.

    How To Make Healthier LCM Bars

    Four steps and you're basically done.

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

    1. Step 1: Prep your tin. Grease and line a 20cm square cake tin with baking paper, leaving a little overhang so it's easy to lift out later.
    1. Step 2: Mix it all together. In a large bowl, combine the rice bubbles, honey, melted coconut oil and sprinkles. Give it a really good stir until every rice bubble is coated.
    1. Step 3: Press firmly. Spoon the mixture into your lined tin and press down hard, extra sprinkles on top if you like. The firmer you pack it, the less crumbly your bars will be.
    1. Step 4: Chill and slice. Pop it in the fridge for at least 3 hours, or overnight if you can wait that long. Slice straight from the fridge with a sharp knife.

    Recipe Tips

    • Press like you mean it: use the bottom of a glass (or a second tin) to really compact the mixture. The firmer you press, the less crumbly your bars will be.
    • Chill before cutting and always slice cold, straight from the fridge, with a sharp serrated knife for neat edges.
    • Storage: keep them in an airtight container in the fridge for up to 7 days.
    • Freezing: pop them in the freezer for up to 1 month. Pack them frozen straight into lunchboxes and they'll be perfectly chewy by snack time, no thawing required.
    • Left out on the bench too long, they'll soften and fall apart. Best served cold, straight from the fridge or freezer.
    • After more ideas for the lunchbox rotation? Have a browse through my 100+ Sweet Lunch Box Recipes.
    Pieces of rice bubble slice with sprinkles on top.

    Homemade LCM Bars FAQs

    Why won't my LCM bars stick together?

    You probably didn't press them firmly enough (been there!). Really compact the mixture down into the tin and chill until completely firm before you try to slice it.

    Can I make these rice bubble bars vegan?

    Yes. Just swap the honey for maple syrup or rice malt syrup and you're good to go.

    Are these suitable for school lunchboxes?

    Yep, they're nut-free and dairy-free. Just pack them cold or frozen so they hold together until snack time.

    Can I use butter instead of coconut oil?

    You can, but the bars won't set as firm and they won't be dairy-free anymore. Coconut oil goes hard in the fridge which is what gives these bars their proper snap, butter stays softer so your bars will be a bit more delicate.

    What does LCM actually stand for?

    Honestly? Nobody really knows for sure, it's one of those Aussie lunchbox mysteries that's never been properly solved. What we do know is this homemade version tastes just as good as the original, minus the marshmallow sugar hit.

    More Rice Bubble Recipes You'll Love

    Rice bubbles are a pantry staple in our house. Here's some other fun ways to use them up:

    • rectangular snack bars with chocolate chips stacked on top of each other on a white plate
      Chocolate Chip Granola Bars
    • A stack of 3 pieces of marshmallow slice with puffed rice.
      Rice Bubble Marshmallow Slice
    • Pieces of Rice Bubble slice topped with Caramilk chocolate arranged on a white stand
      Caramilk Rice Bubble Slice
    • Chocolate rice krispie slice with sprinkles.
      Chocolate Rice Bubble Slice
    Two pieces of rice bubble slice with 100s and 1000s on a blue and white plate.

    Homemade LCM Bars

    A simple 4 ingredient recipe for making homemade LCM Bars using just honey, rice bubbles, coconut oil and sprinkles!
    5 from 22 votes
    Print Pin Rate
    Course: Slices
    Cuisine: Australian recipe, western
    Prep Time: 5 minutes minutes
    Chilling time: 3 hours hours
    Total Time: 3 hours hours 5 minutes minutes
    Servings: 20 pieces
    Calories: 242kcal
    Author: Lucy Mathieson

    Ingredients

    • 120 g (4 cups) rice bubbles (or any puffed rice)
    • 170 g (½ cup) honey
    • 70 g (⅓ cup) coconut oil liquid
    • sprinkles or 100s and 1000s
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    Instructions

    Conventional Method

    • Grease and line a 20cm x 20cm square cake tin with baking paper. 
    • Place the rice bubbles, honey, coconut oil and sprinkles into a bowl and mix together really well (the rice bubbles should all be coated with the honey and coconut oil). 
    • Spoon the mixture into the prepared tin and press down firmly (see notes). Add extra sprinkles. 
    • Place into the fridge for 2-3 hours or overnight. Cut into slices straight from the fridge (with the slice still in the tin). Store in the fridge for up to 7 days (or freeze for up to 1 month). Serve straight from the fridge (see notes). 

    Thermomix Method

    • Grease and line a 20cm x 20cm square cake tin with baking paper. 
    • Place the rice bubbles, honey, coconut oil and sprinkles into the Thermomix bowl and mix on REVERSE Speed Soft - Speed 1 using the spatula to help mix. Continue mixing until the rice bubbles are all coated with the honey and coconut oil.
    • Spoon the mixture into the prepared tin and press down firmly (see notes). Add extra sprinkles. 
    • Place into the fridge for 2-3 hours or overnight. Cut into slices straight from the fridge (with the slice still in the tin). Store in the fridge for up to 7 days (or freeze for up to 1 month). Serve straight from the fridge (see notes). 

    Notes

    RECIPE NOTES & TIPS:
    • Firm Pressing is the Key: Use a second tin or the bottom of a glass to REALLY compact the mixture. It's important that the mixture is pressed down very firmly so that it doesn't crumble when sliced.
    • Storage: Keep in an airtight container in the fridge for up to 7 days.
    • Freezing: Freeze up to 1 month - perfect for batch-making.
    • Serving: These bars are best served chilled - warm they can become crumbly when the honey and coconut oil soften.
    • Lunchbox Note: If you're sending them to school, keep them frozen until morning, or pack with an ice pack - they'll defrost just in time for morning tea break. Or save them for a favourite after-school snack!

    Nutrition

    Calories: 242kcal | Carbohydrates: 47g | Protein: 3g | Fat: 4g | Saturated Fat: 3g | Sodium: 2mg | Potassium: 57mg | Fiber: 1g | Sugar: 5g | Calcium: 3mg | Iron: 15mg
    Did you try this recipe?Mention @BakePlaySmileBlog or tag #BakePlaySmile!

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    Comments

    1. Ashley Steele says

      July 20, 2025 at 6:46 am

      5 stars
      The taste is nice however these are crumbling as soon as I try to slice them up into bars. What can I do to fix it?

      Reply
      • Lucy says

        July 21, 2025 at 9:13 am

        Hi Ashley, make sure they're cut straight from the fridge and using a very sharp serrated knife 🙂

        Reply
    2. Kristina says

      July 12, 2025 at 4:31 pm

      5 stars
      Hi Lucy🌻
      Am I able to use choc chip instead of 100 and 1000?

      Reply
      • Lucy says

        July 18, 2025 at 9:31 am

        Sure!

        Reply
    3. Cloe says

      September 13, 2024 at 1:52 pm

      Is it 247calories per serve ?

      Reply
      • Lucy says

        September 14, 2024 at 7:41 am

        per large serve

        Reply
    « Older Comments
    5 from 22 votes (17 ratings without comment)

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    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!

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