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Choc Coconut Slice

This recipe was tucked away in my Nan Mac’s handwritten recipe book. But it’s back – and this Choc Coconut Slice is on regular rotation at our house!

choc coconut slice

Imagine Golden Rough chocolate transformed into slice form. Can you taste it? Now you’ll have a good idea of what to expect when you sink your teeth into this slice.

The base is a buttery chocolate shortbread, while the top layer is a choc coconut icing made extra creamy with the addition of a little condensed milk.

Ice while hot

Many of Nana Ling’s and Nan Mac’s old-fashioned recipes contain this instruction: “Ice while hot”.

I love this instruction. There’s just something so soothing about smoothing icing over a hot cake or biscuit base.

The icing for this recipe is a little paste-like, and you’ll need to spread it out and smooth it with a butter knife. And the heat from the slice base makes this task a whole lot easier.

Make up this slice and it may just stay on regular rotation at your house!

choc coconut slice layers

Nan Mac’s Choc Coconut Slice recipe

Keep scrolling for the tested and tweaked version.

choc coconut slice recipe
choc coconut slice

Choc Coconut Slice

An old-fashioned slice that combines a buttery shortbread base with a creamy choc coconut topping.
4.67 from 9 votes
Print Pin Rate
Course: Dessert
Cuisine: Australian
Keyword: choc coconut slice
Prep Time: 30 minutes
Cook Time: 20 minutes
Total Time: 50 minutes
Servings: 24 pieces
Calories: 135kcal



  • 150 grams butter
  • 1/2 cup caster sugar
  • 1 cup coconut
  • 1 cup SR flour
  • 1 tablespoon cocoa


  • 1 cup coconut
  • 1 cup icing sugar
  • 1 tablespoon cocoa
  • 1/4 cup condensed milk
  • 1 teaspoon vanilla extract
  • 2-3 teaspoons boiling water



  • Pre-heat oven to moderate (180 degrees celsius, fan-forced).
  • Grease a slice tin (approximately 28 x 18cm) and line with baking paper – leaving longer edges on two opposite sides so you can lift the slice from the tray once set.
  • Cream butter and sugar until a lighter, creamy colour.
  • Stir through coconut.
  • Stir through sifted flour and cocoa until well combined.
    choc coconut slice method
  • Pour the mixture into the prepared slice tin and press out evenly using your fingertips. Even out further using the back of a spoon.
  • Bake for 20 minutes.
  • Make the icing during the baking time as this slice is iced while hot.


  • Sift icing sugar and cocoa into a bowl.
  • Add coconut and mix to combine.
  • Stir through condensed milk.
  • Add enough of the boiling water to form a paste that will be runny enough to spread over the biscuit base.
  • Once biscuit base is removed from the oven, pour the icing over the base and spread out evenly with a butter knife.
  • Place in fridge to set.
  • Once set, cut into 24 pieces.


Calories: 135kcal | Carbohydrates: 16g | Protein: 1g | Fat: 8g | Saturated Fat: 5g | Cholesterol: 15mg | Sodium: 50mg | Potassium: 49mg | Fiber: 1g | Sugar: 11g | Vitamin A: 165IU | Vitamin C: 1mg | Calcium: 12mg | Iron: 1mg
Recipe Rating

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Thursday 12th of November 2020

hi there, I am yet to try this recipe but it looks so yummy! what size cake tin would you recommend using for this? not sure how thinly to spread the slice OR I may not spread thinly enough and it will not cook properly! many thanks.


Monday 29th of November 2021

@Libby, My Nanna use to make this slice when I was a kid. It was my favourite ❤


Thursday 12th of November 2020

Hi Natasha. I've used a slice tin here - which is approximately 28 x 18cm. I'll add this to the recipe instructions above too. Thanks for asking! Happy cooking! Libby x

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