Classic Weet-Bix Slice

Classic Weet-Bix Slice, An Easy Lunchbox Favourite!
If there's one recipe that never seems to go out of style, it's a classic Weet-Bix Slice. It's one of those recipes many of us grew up with, and for good reason. It's quick to make, uses simple pantry staples, freezes beautifully and is always a winner in the lunchbox.
This version is inspired by VJ Cooks, who has so many delicious family-friendly recipes. We gave it a try and it's safe to say it'll be making a regular appearance in our snack rotation!
Whether you're getting ahead with school lunch prep or just looking for an easy afternoon baking project, this one ticks all the boxes.
Why You'll Love This Weet-Bix Slice
- Made with everyday pantry ingredients.
- Great for school lunchboxes and afternoon tea.
- Freezer friendly for easy meal prep.
- Soft, chocolatey and always a crowd favourite.
- Easy enough for the kids to help make.
Ingredients
For the Slice
- 185g butter
- 1 cup sugar
- 2 tbsp cocoa
- 3 Weet-Bix, crushed (50g)
- 1 cup plain flour
- 1 cup desiccated coconut
- 1 tsp baking powder
For the Chocolate Icing
- 2 cups icing sugar
- 3 tbsp cocoa
- 50g butter, softened
- 2 to 3 tbsp boiling water
Method
1. Preheat your oven to 180°C fan-forced and line a slice tin with baking paper.
2. In a large saucepan over low heat, melt together the butter, sugar and cocoa until smooth.
3. Remove from the heat, then stir through the crushed Weet-Bix, flour, coconut and baking powder until everything is well combined.
4. Press the mixture firmly into your prepared tin.
5. Bake for 15 to 20 minutes, until the slice is cooked through but still slightly soft in the centre.
6. While the slice is baking, make the icing by mixing together the icing sugar, cocoa and butter. Add a little boiling water until you have a smooth, spreadable icing.
7. Spread the icing over the warm slice and leave to cool completely before slicing.
Bento Buzz Tips
💛 Cut once it's completely cool. This helps you get nice, clean slices that are easy to pop into lunchboxes.
💛 Freeze individually. Place baking paper between the slices or freeze them in a single layer first before transferring them to a container. That way you can grab one whenever you need it.
💛 Pack it straight from the freezer. It'll slowly thaw in the lunchbox and be ready to enjoy by morning tea.
From the Freezer to the Lunchbox
One of the best things about this Weet-Bix Slice is being able to make a batch ahead of time, freeze individual pieces and grab one whenever you’re packing lunches. Once frozen, pop a piece straight into their bento lunch box or snack sized bento box alongside fruit, veggies and their other favourites. Our Bento Cups & Dividers are also handy for keeping the slice in its own little section, especially if you’re packing it next to juicy fruit.
Because the slice can go into the lunchbox straight from the freezer, pair it with an insulated lunch bag and ice pack to help keep the rest of their lunch cool too. It’s an easy little make-ahead snack to have stashed away for those weeks when you want one less thing to think about in the morning.
We'd Love to See Yours!
If you give this Classic Weet-Bix Slice a try, don't forget to tag @thebentobuzz on Instagram or Facebook. We absolutely love seeing what you're baking and packing into your lunchboxes.
Happy baking! 💛
about
Born from a passion to create deliciously bright and inviting meals for my daughter 15 years ago. As she grew, my lunch box and bento decoration stash did too... and so did my need to enable everyone else around me and just like that, The Bento Buzz began!
Since 2015 The Bento Buzz has grown into Australia's largest lunch & hydration specialty store.
Our buzzy team ensures your online order of products gets to you as quickly as possible, and we are packing and dispatching orders to Australia and New Zealand from our Gold Coast warehouse daily.
The Bento Buzz flagship superstore opened in 2024 and hosts the largest range of bento boxes, drink ware and fun food items in Australia. The in-store team LOVE to chat lunchboxes, and with their extensive experience and knowledge, can help you choose the perfect items for your busy bees!
Forever thankful for our community, Peta and The Bento Buzz team X
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