This Coffee Slice is the perfect no-bake, sweet treat match for your next cup of coffee! A melt and mix coffee and biscuit base with chocolate and coffee icing, then set in the fridge.
Calling all coffee lovers out there, this one is for you! My Coffee Slice is another of my super easy no-bake slice recipes. With no cooking required, it sets in the refrigerator - now that's my kind of cooking!

It's got a rich, coffee flavoured biscuit base that's topped off with a coffee-spiked chocolate icing. You could probably describe this as a mocha slice, with that chocolate/coffee combo going on.
Table of Contents
Ingredients you will need for this recipe
- plain biscuits (I used Arnott's Marie)
- salted butter
- instant coffee
- cocoa powder
- light brown sugar
- condensed milk
- desiccated coconut
- vanilla
- milk chocolate
- boiling water
*Please see the recipe card below for exact quantities and detailed instructions
How to make this recipe
- Process the biscuits in a food processor until fine crumbs.
- In a small bowl, mix the instant coffee, cocoa powder and light brown sugar with boiling water to dissolve.
- Place crushed biscuits, condensed milk, coconut, melted butter, vanilla and coffee/cocoa mixture in a large bowl and mix well.
- Press mixture into a greased and lined baking tin.
- For the icing, melt the chocolate and butter together in the microwave, then add more instant coffee and mix.
- Spread chocolate over biscuit base and place in the fridge to set.
My top tips for making this recipe
- If you don't have a food processor, just put the biscuits in a sturdy plastic bag and give them a bash with a rolling pin or something else heavy.
- Greasing and lining the baking tin is important, even though we aren't going to "bake" anything! This step will help you get your slice out of the tin once it's set. If it still won't budge, just sit the bottom of the tin in some hot water for a few seconds and it should come right out.
Serving suggestions and ideas for add-ins
- I have just used plain-common-all-garden coffee in the recipe, but a flavoured coffee that you enjoy would be good too.
- You could add some chopped walnuts.
- Serve it with...a cup of coffee!
Other recipes you may enjoy
Lemon and Blueberry Slice - a tangy, no bake (fridge) lemon slice with dried blueberries and a quick and simple white chocolate topping.
Want to save this recipe?
No Bake Ginger Slice - a super simple no bake slice using ginger biscuits and dark chocolate.
Caramel and Peanut Butter Slice - no bake, melt & mix bars using a block of Caramello chocolate. A caramel lover's dream!
📖 Recipe

Coffee Slice
Ingredients
- 250 g Arnott's Marie biscuits
- 1 tablespoon instant coffee granules
- 1 tablespoon cocoa
- 1 tablespoon light brown sugar
- 250 g sweetened condensed milk
- 85 g desiccated coconut
- 80 g salted butter melted
- ½ teaspoon vanilla
- 1 tablespoon boiling water
Chocolate Icing
- 180 g milk chocolate
- 40 g salted butter
- ½ teaspoon instant coffee granules
Instructions
- Grease and line a 20 x 20 cm baking tin and set aside.
- Process the biscuits in a food processor until fine crumbs.250 g Arnott's Marie biscuits
- In a small bowl, mix together the instant coffee, cocoa powder and light brown sugar with boiling water to dissolve.1 tablespoon instant coffee granules1 tablespoon cocoa1 tablespoon light brown sugar1 tablespoon boiling water
- In a large bowl, place crushed biscuits, condensed milk, desiccated coconut, melted butter, vanilla and coffee/cocoa mixture and mix well to combine.250 g sweetened condensed milk85 g desiccated coconut80 g salted butter½ teaspoon vanilla
- Press the mixture into the greased and lined baking tin.
- For the icing, melt the milk chocolate and butter together in the microwave (in 30 second bursts, mixing with a metal spoon between bursts). When melted, mix to incorporate the butter, then add instant coffee and mix well.180 g milk chocolate40 g salted butter½ teaspoon instant coffee granules
- Spread chocolate icing over the biscuit base and then place in the fridge to set.
Notes
- If you don't have a food processor, just put the biscuits in a sturdy plastic bag and give them a bash with a rolling pin or something else heavy.
- Greasing and lining the baking tin is important, even though we aren't going to "bake" anything! This step will help you get your slice out of the tin once it's set. If it still won't budge, just sit the bottom of the tin in some hot water for a few seconds and it should come right out.





I’ve made this a couple of times & it’s been gooey.
I now know why!
I added a full can of condensed milk!
The actual amount is less than a tin full.
Will try again as its delicious
Hi Sue, I'm glad you are enjoying it regardless of it being gooey haha! I'm sure you will have a much better result using only the 250g as written in the recipe, L x
made this yesterday and its still not set! Just tried a slice with my morning coffee and it was so soft couldn't even hold it. Followed the recipe exactly, so disappointing and a waste of ingredients!
Hi Wilma, I'm sorry this didn't work for you! Did you perhaps use evaporated milk instead of sweetened condensed milk in the recipe? Or did you have to use gluten free biscuits for dietary requirements?
Hi, no I definitely used condensed milk and normal biscuits, and I measured everything out carefully. Don't understand how it's gone so soft, but you literally can't pick it up and eat it....tastes good though!
That's a shame Wilma - I am sorry it's not working for you. At least it tastes good though! L x
Absolutely!!! 😋
Just made this today, it's delicious. I wonder if people having issues with it setting are using a whole tin of condensed milk rather than 250g
Glad you enjoyed it Claire - and it's definitely a possibility!