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Sprinkles on top of rice krispie slice.
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Three Ingredient Rice Bubble Bars

Our 3 ingredient Thermomix Rice Bubble Bars taste just like store-bought LCM bars! Made from rice bubbles, marshmallows and butter and prepped in just 15 minutes... don't forget to add sprinkles for a fun (and kid-approved touch!).
Course Snacks
Cuisine Australian
Prep Time 15 minutes
Cook Time 2 hours
Total Time 2 hours 15 minutes
Servings 24 serves
Calories 81kcal
Cost $5

Equipment

  • Thermomix

Ingredients

  • 75 g butter
  • 200 g white marshmallows see notes
  • 200 g rice bubbles or any puffed rice (approx 6 cups)
  • 100s & 1000s to decorate, optional

Instructions

  • Line the base and sides of an 18 X 28cm rectangular slice tin with baking paper - leave the baking paper hanging over the sides.
  • Place the marshmallows and butter into the Thermomix bowl and cook for 4 minutes, 80 degrees, Speed 1 or until melted and combined. After approximately 2 minutes, use the spatula to scrape down the sides.
  • Add the rice bubbles to the bowl and mix for 1 minute 20 seconds, Speed 1, Reverse, or until mixture has combined. Use the spatula to help mix.
  • Pour the mixture into the prepared slice tin and use the flat side of a large spoon to spread across the tin and push down very firmly.
  • If decorating, sprinkle the 100s and 1000s over the top of the slice.
    Place in the fridge for two hours or until set.
  • Remove the slice from the fridge and cut into pieces.

Notes

RECIPE NOTES & TIPS
  • You can use a mixture of pink and white marshmallows if you prefer.
  • Use regular sized marshmallows (like Pascalls brand)
  • Use a new box of rice bubbles (to avoid stale rice bubbles)
  • Store the slice in the fridge for up to 1 week (keeping it in the fridge ensures it stays crunchy!)
  • Insert the Thermomix spatula through the MC hole and stir to to help mix the rice bubbles through the marshmallow mixture. 
  • Press the mixture VERY firmly into the slice tin. Use the back of a large spoon and press down firmly.
  • Freeze for up to 3 months. 

Nutrition

Calories: 81kcal | Carbohydrates: 14g | Protein: 1g | Fat: 3g | Saturated Fat: 2g | Polyunsaturated Fat: 0.1g | Monounsaturated Fat: 1g | Trans Fat: 0.1g | Cholesterol: 7mg | Sodium: 27mg | Potassium: 11mg | Fiber: 0.1g | Sugar: 5g | Vitamin A: 78IU | Calcium: 2mg | Iron: 0.3mg