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rice bubble slice.
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5 from 4 votes

Rice Bubble Slice

Marshmallow Rice Bubble Slice is a favourite – perfect for lunch boxes, kids parties and more!
Prep Time15 minutes
Setting time2 hours
Total Time2 hours 15 minutes
Course: Dessert
Cuisine: Australian
Keyword: rice bubble slice
Servings: 24 squares
Calories: 64kcal


  • 4 cups rice bubbles
  • 75 grams butter, cubed
  • 180 grams marshmallows (white/vanilla marshmallows)
  • sprinkles (to decorate)


  • Grease a slice tin (approx 28 x 18cm) and line with baking paper, leaving paper overhanging at sides to assist with removal of slice later.
  • Measure rice bubbles into a large mixing bowl.
  • Melt butter and marshmallows over low heat until mixture is melted and smooth. Keep stirring until there are no marshmallow lumps but take care not to burn the mixture.
  • Pour butter and marshmallow mixture over rice bubbles and stir to combine.
  • Pour mixture into slice tin. The mixture is initially too sticky to press into the tin with your hands so you'll need a piece of baking paper placed over the mixture first. Press down with hands and then using the back of a metal spoon. Remove top piece of paper, use metal spoon again to even out slice and then add some sprinkles to the top and place into fridge to set.
  • Allow to set for at least a couple of hours before removing the slice from the tin and cutting into squares.



Q. How long does Rice Bubble Slice last?
Stored in an airtight container in the fridge, it should last for up to 5 days.
Q. Can I freeze Rice Bubble Slice?
You sure can. Freeze in an airtight container for up to 3 months.
Q. How can I make this slice even more fun?
Add the optional sprinkles and you’ll definitely feel like you’re back in the 80’s.
You could also drizzle with melted chocolate, or add a top layer of chocolate.
Q. Is this gluten free Rice Bubble Slice?
You’ll need to use rice bubbles, marshmallows and sprinkles that are marked “gluten free” to be sure this slice is entirely free of gluten.


Calories: 64kcal | Carbohydrates: 10g | Protein: 0.5g | Fat: 3g | Saturated Fat: 2g | Polyunsaturated Fat: 0.1g | Monounsaturated Fat: 1g | Trans Fat: 0.1g | Cholesterol: 7mg | Sodium: 51mg | Potassium: 7mg | Fiber: 0.03g | Sugar: 5g | Vitamin A: 389IU | Vitamin C: 3mg | Calcium: 1mg | Iron: 1mg