or scroll for handy tips and a little nostalgia.

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.

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.

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! Yep, weetbix is more than a breakfast cereal (though do check out my Rum Balls made with weetbix recipe at Christmas time and the sweet Weetbix Marshmallow Slice).
The Recipe
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.”

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 of this 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.

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.

Bake in the oven for 20 minutes.
Icing
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.

Allow to cool completely before lifting from the tin using the baking paper and slicing into 24 pieces with a sharp knife.
Air Fryer Method
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
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.
- 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.
- Smooth out the base further using the back of a spoon.
- Cook in the air fryer at 155 degrees celsius for 20 minutes.
- 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.
- Place basket on bench so that it can cool evenly.
- 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.
Sharon
Monday 31st of October 2022
This is the best! So easy and delicious and perfect for lunch boxes.
Libby Hakim
Monday 31st of October 2022
It's a classic. Thanks for the feedback and rating :) Happy cooking!
Dianne
Tuesday 18th of October 2022
As below, commented in the wrong place, lol
Tracey
Monday 2nd of November 2020
I made it today. The ingredients don't make alot for the base.
Dianne
Tuesday 18th of October 2022
@Libby, Fantastic slice, I do remember this growing up on the farm at Powlett Plains. Just only my comments on this The slice pan sizing is different. I noticed you use the Rose Coloured Willow one in the video, that measures 27.5 x 17.5 cm. The other two pictures you have, not sure what size pans they are?. Looked everywhere on the internet, canโt find your sizing 26 x 16?. I actually doubled the base mixture to get a good base as you have shown. Loved it, great recipe โค๏ธ
Dianne
Tuesday 18th of October 2022
@Tracey, I agree Tracy made this today.
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!