Peppermint Chocolate Weet-Bix Slice
If chocolate and peppermint is your favourite flavour combination, this Peppermint Chocolate Weet-Bix Slice might just become your new obsession!
We take our favourite Chocolate Weet-Bix slice and give it a choc-mint glow up. It’s rich, chocolatey and deliciously minty. It tastes a little like a homemade peppermint chocolate bar, only even better!
This easy melt-and-mix Weet-Bix slice is made with simple pantry staples and is a great recipe for beginner bakers or little helpers in the kitchen. Enjoy this chewy chocolate slice as a lunchbox treat, an afternoon pick-me-up or add a splash of green colouring for a fun St Patrick’s Day dessert.
Be warned, this nostalgic Aussie favourite is seriously moreish. Cutting it into small pieces won’t stop you from going back for another!
Quick to prepare and guaranteed to disappear fast, the hardest part is stopping at just one piece!
If you love easy, chocolatey treats, make sure you try my Chocolate Coconut Slice next. It’s another melt-and-mix chocolate slice the whole family will love.
Other Weet-Bix Recipes You Will Enjoy
Why You’ll Love This Recipe
A delicious Aussie classic: It gives the much-loved chocolate Weet-Bix slice a refreshing peppermint twist.
Easy melt-and-mix method: No mixer or fancy baking equipment required.
Perfect for beginner bakers: The simple method makes it a great recipe for baking with the kids.
Made with pantry staples: You may already have most of the ingredients waiting in your cupboard.
Great for any occasion: Serve it for afternoon tea, parties, bake sales or as a fun St Patrick’s Day treat.
Top Tips
Crush the Weet-Bix finely: This helps the base hold together and makes the finished slice easier to cut.
Press the base down firmly: Use the back of a spoon or the base of a glass to create a smooth, even layer that won’t crumble when sliced.
Adjust the peppermint to taste: Peppermint essences can vary in strength, so taste the icing before adding any extra.
Chill before slicing: Refrigerate the finished slice for several hours or overnight to help the icing set and create cleaner cuts.
Use a sharp knife: Wipe the blade clean between each cut for neat, tidy pieces.
Variations
Chocolate drizzle: Drizzle melted dark or milk chocolate over the peppermint icing.
Peppermint chocolate topping: Replace the icing with melted peppermint chocolate for an extra-indulgent finish.
Classic chocolate icing: Leave out the green colouring and add cocoa powder for a chocolate-peppermint topping.
Festive toppings: Decorate with sprinkles, desiccated coconut or crushed peppermint chocolate.
Extra chocolate chips: Stir chocolate chips through the base before baking.
Milder mint flavour: Leave the peppermint essence out of the base and add it only to the icing.
Serving Suggestions
Enjoy this slice chilled or allow it to soften slightly at room temperature before serving. It’s delicious with a cup of tea, packed into lunchboxes or added to an afternoon-tea platter.
For a special occasion, decorate it with a dark chocolate drizzle and crushed peppermint chocolate.
Storage
Store your Peppermint Chocolate Weet-Bix Slice in an airtight container in the refrigerator for up to one week. Place baking paper between the layers to prevent the icing from sticking.
The slice can also be frozen for up to three months. Freeze the pieces in a single layer before transferring them to a freezer-safe container. Allow them to thaw overnight in the refrigerator.
Frequently Asked Questions
Can I make this Weet-Bix slice ahead of time?
Yes. This is a great make-ahead slice and tastes even better once it has chilled and the icing has set. Prepare it the day before serving and store it in the refrigerator overnight.
Why is my Weet-Bix slice crumbly?
Make sure the dry ingredients are completely coated in melted butter and press the mixture very firmly into the tray. Cutting the slice before it has cooled and set can also cause it to crumble.
Can I use peppermint extract instead of peppermint essence?
Yes, but peppermint extract may be stronger. Begin with a smaller amount, taste the icing and gradually add more if needed.
Can I leave out the green food colouring?
Absolutely. The colouring is only for appearance and won’t affect the flavour or texture.
Can Peppermint Chocolate Weet-Bix Slice be frozen?
Yes. Freeze it in an airtight container for up to three months, with baking paper between the layers. Thaw it in the refrigerator before serving.
How do I cut the slice neatly?
Chill the slice for a few hours or overnight, then cut it using a large, sharp knife. Wipe the blade clean between cuts for tidy edges.

Peppermint Chocolate Weet-Bix Slice
If you love a good Weet-Bix slice, wait until you try this choc mint version! With a rich, fudgy chocolate-coconut base and a smooth, peppermint-infused topping, this slice is an absolute must-make. It’s easy, delicious, and perfect for lunchboxes, afternoon tea, or whenever you need a sweet treat!
Ingredients
- 4 Weet-Bix
- 1 cup self-raising flour
- 1 cup coconut
- ½ cup caster sugar
- 1 tablespoon cocoa
- 250g butter
- 1 teaspoon vanilla
- 1 teaspoon peppermint essence
- 2 cups icing mixture
- ¼ cup cocoa
- 30g butter, melted
- Boiling hot water
- 1 teaspoon peppermint essence
- A few drops of green food colouring
Instructions
- Preheat your oven to 160ºC fan-forced. Line a slice tray with baking paper.
- In a large bowl, crush the Weet-Bix with your hands, then add the flour, coconut, caster sugar, and cocoa. Stir to combine.
- Melt the butter, then add it to the dry ingredients along with the vanilla and peppermint essence. Mix well until all ingredients are evenly combined.
- Press the mixture firmly into the lined slice tray, using the back of a spoon or the base of a glass to create a smooth, even surface.
- Bake for 20-25 minutes, or until the slice feels firm to the touch. Set aside to cool completely before icing.
- Sift the icing mixture into a bowl.
- Add the melted butter and stir to combine.
- Gradually add boiling water, a little at a time, stirring until you reach a smooth, spreadable consistency. Be careful not to make it too runny.
- Mix in the peppermint essence and add green food colouring, one drop at a time, until you reach your desired shade.
- Spread the icing evenly over the cooled slice. Leave plain or decorate with sprinkles, coconut, or your favourite topping.
- Allow the icing to set in the fridge before slicing into squares. Enjoy!
Notes
- If your icing is too runny, stir in a little extra sifted icing sugar until it thickens to a smooth, spreadable consistency.
- You can ice the slice while it’s still warm, or wait until it has completely cooled before adding the icing—both work well!
- For cleaner slices, place the iced slice in the fridge for a few hours before cutting. This helps the icing set and makes slicing easier.
Nutrition Facts
Calories
295Fat
21 gSat. Fat
11 gCarbs
31 gFiber
1 gNet carbs
29 gSugar
18 gProtein
2 gSodium
167 mgCholesterol
38 mgThe nutritional information provided is computer generated and is only an estimate. This data is provided as a courtesy for informational purposes only.

