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Weetbix Slice

An oldie but a goodie. You can't beat this classic Weetbix Slice, covered in chocolate icing.
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or scroll for tips (and a little nostalgia).

weetbix slice

Weetbix Slice is one of those slices that’s great to pop into lunch boxes or enjoy as a sneaky snack.

It’s also one that’ll quickly become a family favourite – if it’s not already.

weetbix slice

Aussie kids, are Weetbix kids, Aussie kids… are Weet. Bix. Kids!

Remember the jingle?

Weet-Bix was developed in Sydney, Australia during the mid 1920s and first produced in a factory on Parramatta Road, Leichhardt.

But it wasn’t until about 1985 that the jingle came along. And kids had been enjoying their weet-bix for many decades before we sang about it.

vintage weetbix ad
An ad for Weet-Bix which appeared in the March 1960 Australian Women’s Weekly.

Nearly 100 years on, Weet-Bix was voted “Most Trusted Breakfast Food” in the 2022 Reader’s Digest Most Trusted Brands consumer poll.

And while it’s hard to beat starting the day with Weet-Bix, warm milk and sliced banana, we’ve come up with some tempting weetbix recipes in those the past 100 years. Perhaps none more popular than this Chocolate Weetbix Slice recipe! (Though do check out my Rum Balls made with weetbix recipe at Christmas time.)

Weetbix Slice: an all-time fave!

I don’t remember a time when my mum didn’t make this slice.

When I think of it, I can see it perched inside a Tupperware container from the 70s. But it didn’t stay there for long. It always disappeared quickly.

I’ve always loved it and here’s some evidence of that: on the original recipe written out by my mum, my much younger self has added a little note.

“Mum I want to cook this.” 

weetbix slice recipe
Original recipe from my Mum’s cookbook. Keep scrolling for the updated version of this recipe in the recipe card at the bottom of the post.

And, 30+ years later I’m still wanting to cook this!

Traditional Weetbix Slice: the ultimate “crib” food

My mum has another memory of this slice.

She remembers it as the first slice my Nan Mac (Nana Ling’s daughter) made. She remembers Nan making it regularly for my Pop Mac’s “crib”.

“Crib” is Australian slang for a light meal or lunch eaten at work.

And this lovely memory of my Pop Mac going off to work, in the mines or on a farm, with some Weetbix Slice in his crib is just what I love about this slice.

It’s always been the comforting little treat that’s the perfect reward after a hard day’s work. It’s a slice that your family will love – and keep on making – for generations. 

slab of weet-bix slice

Ingredients for Weetbix Slice

To make this slice you’ll need:

  • 3 weetbix
  • brown sugar 
  • SR flour 
  • desiccated coconut 
  • cocoa
  • butter
  • icing sugar.

Making Weetbix Slice

Start by pre-heating the oven to moderate. Then grease a slice tin (approx 26 x 16 cm) and line with baking paper, leaving excess on the sides to lift out slice once cooked.

Crush the weetbix into a bowl. Really get into it so the weetbix reaches a fine consistency!

Add the remaining dry ingredients to bowl and stir to combine.

Melt the butter and add to dry ingredients. Mix well.

Press mixture into slice tin with hands and even the top surface using the back of a spoon.

weetbix slice mixture tray

Bake in the oven for 20 minutes.

Icing Weetbix Slice

Start preparing the icing a few minutes before the slice is ready to be removed from the oven. This slice is iced while hot from the oven.

Sift the icing sugar and cocoa into a bowl.

Add 2 tablespoons of the boiling water to the butter and allow the butter to melt.

Add the melted butter mixture to the icing sugar and cocoa and mix well.

Add enough of the remaining tablespoon of boiling water to ensure the icing is soft enough to spread. Spread the icing over the slice while still hot.

Sprinkle with additional coconut if desired.

icing weetbix slice

Allow to cool completely before lifting from the tin using the baking paper and slicing into 24 pieces with a sharp knife.

Weetbix Slice in the Air Fryer

You can also make this slice in an air fryer.

So whether you’re away in the caravan or your oven is busy with other things, you can still bake up a batch of this crowd-pleaser.

Included below are the regular instructions along with additional instructions for making this slice in the 3.2L Kmart Air Fryer.

weetbix slice

Weetbix Slice

An oldie but a goodie. You can't beat this classic Weetbix Slice, covered in chocolate icing.
4.66 from 20 votes
Print Pin Rate
Course: Dessert
Cuisine: Australian
Keyword: weetbix slice
Prep Time: 15 minutes
Cook Time: 20 minutes
Total Time: 35 minutes
Servings: 24 pieces
Calories: 141kcal

Ingredients

  • 3 weetbix (or 50 grams of another similar wheat-based cereal)
  • 1/2 cup brown sugar (120 grams)
  • 1 cup SR flour (135 grams)
  • 1 cup desiccated coconut (80 grams)
  • 1 teaspoon cocoa
  • 125 grams butter

Icing

  • 2 cups icing sugar
  • 1 1/2 tablespoon cocoa
  • 1 tablespoon butter (20 grams)
  • 2-3 tablespoon s boiling water
  • 2 teaspoons desiccated coconut (optional, for decorating)

Instructions

  • Pre-heat oven to moderate (180 degrees celsius, fan-forced).
  • Grease a slice tin (approx 26 x 16 cm) and line with baking paper, leaving excess on the sides to lift out slice once cooked.
  • Crush weetbix into a bowl.
  • Add remaining dry ingredients to bowl and stir to combine.
  • Melt butter and add to dry ingredients. Mix well.
  • Press mixture into slice tin with hands and even the top surface using the back of a spoon.
  • Cook for 20 minutes.
  • Start preparing the icing a few minutes before the slice is ready to be removed from the oven. This slice is iced while hot from the oven.

Icing

  • Sift icing sugar and cocoa into a bowl.
  • Add 2 tablespoons of the boiling water to the butter and allow butter to melt.
  • Add melted butter mixture to icing sugar and mix well.
  • Add enough of the remaining tablespoon of boiling water to ensure the icing is soft enough to spread. Spread the icing over the slice while still hot. Sprinkle with additional coconut if desired.
  • Allow to cool completely before lifting from the tin using the baking paper and slicing into 24 pieces with a sharp knife.

Airfryer Method

  • Using the 3.2L Kmart Air Fryer (or equivalent), use a circle of baking paper to line the basket so the paper reaches about one third to half way up the side of the basket.
    air fryer method for weetbix slice
  • Make the slice base according to the instructions above and pour mixture into air fryer basket.
  • Press down with your hands to make the base even and firm.
    air fryer method for weetbix slice
  • Smooth out the base further using the back of a spoon.
    weetbix slice in air fryer
  • Cook in the air fryer at 155 degrees celsius for 20 minutes.
    air fryer method for weetbix slice
  • Make up icing according to instructions above a few minutes before the base finishes cooking.
  • Once base is cooked, remove basket and pour icing over base while still hot.
    pouring icing over hot base
  • Place basket on bench so that it can cool evenly.
    allow icing to cool
  • Allow to cool completely before lifting slice from basket, lifting gently around the sides until it comes out of the basket in one piece.
  • Cut slice into pieces.
    weetbix slice made in an air fryer

Video

Nutrition

Calories: 141kcal | Carbohydrates: 20g | Protein: 1g | Fat: 7g | Saturated Fat: 5g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 1g | Cholesterol: 12mg | Sodium: 41mg | Potassium: 38mg | Fiber: 1g | Sugar: 15g | Vitamin A: 146IU | Vitamin C: 1mg | Calcium: 8mg | Iron: 1mg
Recipe Rating




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Tracey

Monday 2nd of November 2020

I made it today. The ingredients don't make alot for the base.

Libby

Tuesday 3rd of November 2020

Hi Tracey. Thanks for the review and comment. Did you use a 26 x 16 cm slice tin? The quantities should work well for this size tin. Libby :)

Zohra Aly

Wednesday 29th of April 2020

It looks yum, and I'm fasting so ....

I love the story behind it even more Libby, down to your cute hand-written note to your mum, and the Pop Mac crib story. I love hand-written recipe books- they're full of history in all the splodges and stains and hand-writing :)

Libby

Wednesday 29th of April 2020

Hi Zohra! Aww, thanks for your lovely comments. And you've reminded me of one of my favourite Sydney memories - the Lebanese sweets shops bustling each night during Ramadan and the wonderful special Ramadan desserts. Ramadan Mubarak.

Sandra Robbins

Wednesday 29th of April 2020

I remember eating this but my Mother never made it nor have I. It must have been at a friends house. Just reading the ingredients I can taste it and relive the memory. Must try this.

Sharon

Wednesday 30th of December 2020

I use white sugar, 3 tblspns cocoa and 150g butter.

Libby

Wednesday 29th of April 2020

Hi Sandra. It's definitely one worth trying! It tastes just like it did when I was a kid :) Happy cooking!

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