This Lemon Weet-Bix Slice is another old-school favourite baked treat, bursting with fresh, lemon taste.

My recipe features the ever-popular Weet-Bix wholegrain wheat cereal in the base, and has a fudgy, lemony topping made with sweetened condensed milk.
If your kids don't want to eat the last crumbs or the broken Weet-Bix at the bottom of the cereal packet, then this lemon Weet-Bix slice recipe is perfect for you!
Why I think you will love this recipe
- Made with pantry staples and a fresh lemon
- 2-ingredient topping, just mix and pour
- A great way to use up leftover cereal
What you need to make this recipe
*Please see the recipe card below for a full list of ingredients with exact quantities and detailed instructions

- Weet-Bix breakfast cereal
- plain flour - all-purpose flour
- caster sugar
- desiccated coconut
- lemon juice and zest
- baking powder
- salted butter
- sweetened condensed milk
*Please see the recipe card below for a full list of ingredients with exact quantities and detailed instructions
How to make lemon Weet-Bix slice
- In a bowl, combine crushed Weet-Bix, flour, caster sugar, desiccated coconut and lemon zest.
- Mix in melted butter.

- Press the mixture into the prepared pan.
- Bake until lightly golden.
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- Combine sweetened condensed milk and lemon juice.
- Spread this mixture over the base, then bake until set.

My top tips for the best result
- If you want a nice, smooth surface on top of this slice, it needs to be smoothed out before it goes into the oven. The topping doesn't really melt or spread much when it's heated.
Storage
Store this lemon Weet-Bix slice in an airtight container in the fridge for up to 5 days.
This recipe is suitable to freeze.
Other recipes you may enjoy
Chocolate Weet-Bix Slice - another classic slice that uses pantry staples and the last few crumbles in the cereal box to make a chocolate treat!
No Bake Lemon Slice - the most popular recipe on the site, this lemony no-bake treat is always a huge hit when I take it to a function. This is the slice recipe that everyone asks for!
No Bake Apricot Slice - the whole family will love this chewy slice filled with soft dried apricots and coconut.
📖 Recipe

Lemon Weet-Bix Slice
Ingredients
- 3 Weet-Bix crushed (1 Weet-Bix is 15.5 grams)
- 120 g plain flour (all-purpose flour) sifted
- 165 g caster sugar
- 75 g desiccated coconut
- ¾ teaspoon baking powder sifted
- 1 large lemon - zest and juice (juice strained)
- 160 g salted butter melted
- 395 g sweetened condensed milk
Watch me make this recipe
Instructions
- Preheat oven to 180℃.
- Grease and line a 20 cm square baking pan with baking/parchment paper and set aside.
- To a large bowl, add crushed Weet-Bix, flour, caster sugar, desiccated coconut and lemon zest and mix to combine.3 Weet-Bix120 g plain flour (all-purpose flour)165 g caster sugar75 g desiccated coconut¾ teaspoon baking powder1 large lemon - zest and juice
- Add melted butter and mix until well combined.
- Tip the base mixture into the prepared pan, and press down well to compact.
- Bake for 15 minutes or until lightly golden, then allow to cool slightly while you make the topping.
- For the topping: In a medium bowl, mix together sweetened condensed milk and lemon juice.
- Spoon this mixture over the base and smooth it out using a silicone or offset spatula (see my notes).
- Bake for 16 to 18 minutes or until the topping is starting to bubble at the edges and the centre is set.
- Allow to cool in the tin for 10 minutes, then remove from the tin and place on a wire rack to cool completely, then slice.
Notes
- If you want a nice, smooth surface on top of this slice, you will need to smooth it out before it goes into the oven. The topping doesn't really melt or spread much in the oven.


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