Milo Oat Slice
Looking for a quick and easy lunchbox recipe the whole family will love? This Milo Oat Slice is a chewy, chocolatey favourite made with oats, coconut and a nostalgic hit of Milo.
It’s a one-bowl, melt-and-mix recipe that comes together in minutes, making it perfect for busy mornings, school lunchboxes or after-school snacks.
Enjoy it as is, stir through white chocolate chips, or top with a creamy Milo butter icing for an extra-special treat. Chewy, chocolatey and endlessly popular, this is one slice you’ll make again and again.

Milo Oat Slice
A quick, chewy and delicious Milo Oat Slice made with oats, coconut and white chocolate chips. Perfect for lunchboxes, snacks or afternoon treats!
Ingredients
- 150g unsalted butter, melted and cooled to room temperature
- 1 cup rolled oats
- ½ cup self-raising flour
- ½ cup plain flour
- ½ cup Milo
- ¾ cup desiccated coconut
- ¾ cup brown sugar (lightly packed)
- ½ cup white chocolate chips
- 1 egg, lightly whisked
- 1 teaspoon vanilla extract
- 1 cup icing sugar
- ⅓ cup Milo
- 50g butter, softened
- 1 teaspoon vanilla extract
- 1 tablespoon boiling water (plus extra if needed)
Instructions
- Preheat the oven to 160°C fan-forced (180°C conventional). Line a 28cm x 18cm slice tin with baking paper.
- In a large bowl, combine the oats, self-raising flour, plain flour, Milo, coconut, and brown sugar. Mix well.
- Add the white choc chips, vanilla, egg and cooled melted butter. Stir until combined.
- Press the mixture evenly into the prepared tin and smooth the top.
- Bake for 20–25 minutes, or until the top is golden brown. Allow to cool completely in the tin before icing or slicing.
- In a small bowl, sift the icing sugar and stir through the Milo.
- Add the softened butter, vanilla and boiling water. Stir gently until smooth and glossy. Adjust with extra icing sugar or water if needed.
- Spread over the cooled slice, allow it to set slightly, then slice into squares.
Notes
TOP TIPS:
- Cool the butter: Let melted butter cool before mixing to stop the chocolate chips from melting.
- Neat slices: Chill the slice before cutting for clean, even edges.
- No icing? No worries: Skip the icing for a more wholesome, lunchbox-friendly bar.
- Freezer-friendly: Slice, wrap and freeze for easy grab-and-go snacks.
Icing tips
- If the icing is too thick, add boiling water 1 teaspoon at a time until smooth.
- If it’s too runny, add extra sifted icing sugar 1 tablespoon at a time until thickened.
- For ultra-smooth icing, blend all ingredients in a small blender until thick and glossy.
Storage & variations
- Store in an airtight container at room temperature or in the fridge for up to 5 days.
- Freeze the un-iced slice for up to 1 month - perfect for lunchbox prep.
- Swap white chocolate chips for dark chocolate, seeds or chopped nuts for a fun twist.
Nutrition Facts
Calories
357Fat
20 gSat. Fat
13 gCarbs
42 gFiber
2 gNet carbs
40 gSugar
28 gProtein
4 gSodium
47 mgCholesterol
51 mgThe nutritional information provided is computer generated and is only an estimate. This data is provided as a courtesy for informational purposes only.


