Coffee Slice (no bake)

Dec 27, 2021

This slice takes no time to whip up, is perfect in the smoko bag, as a gift, or simply the perfect plate when you head to a friends house.

This year I even cut the slice into bite sized pieces and placed them in little Christmas decorated themed tins. I gave them as gifts along with some homemade cordial.

You don’t need many ingredients to make this.
Just the basics most of you would have already in the pantry.

Plain vanilla biscuits (crumbed)
Condensed milk

We have a very old walnut tree on the farm and every year we gather up the dried fruit and use them throughout the year. If you don’t have a walnut tree, I’m sure you may no someone who does. I like when others come and collect the walnuts, as it attracts rats and mice to the house near the tree.

I melt my butter and condensed milk on the stove top, but a microwave will work just as well.

I use my Nespresso machine to make a strong short pour of coffee. It measures exactly 60mls (1/4 cup). But if you don’t have a coffee machine then instant coffee works just as well.

Use your dough whisk to combine all of the ingredients and press them into a lined tin.
I used a square 22cm tin to get a thick base. But a large sponge roll tin (29.5 x 19cm) would work just as well but just result in a thinner slice.

Once all the ingredients have been pressed in to the tin use paper towels (triple thickness) to soak up any excess butter and at the same time make an even top surface.

Remove the paper towels and place them into your home compost or your home worm farm.

Place in the fridge and let the base set.
While the base is chilling make the icing using;

Sifted icing sugar
Strong coffee
Melted butter

This slice is my weakness!
I can never stop at one slice.

If you like the flavour of coffee . . . have you tried;

Laura’s Mocha Java Granola

Nadia’s Caramel Coffee Walnut Slice

Coffee and Walnut Slice

This quick no bake slice will wow you and your family.
Prep Time 10 minutes
Cook Time 15 minutes



  • 200 grams butter
  • 395 grams condensed milk
  • 60 mls strong coffee 1/4 cup
  • 2 cups walnuts
  • 500 grams crushed vanilla biscuits 2 packets of regular plain biscuits (nz brands)


  • 2 cups sifted icing sugar
  • 2 tbsp melted butter
  • 60 mls strong coffee 1/4 cup
  • chopped walnuts To sprinkle on top. Not essential.



  • Melt together the butter and condensed milk in a large pot over a low heat on the stove top. You could use your microwave too.
  • Take off the heat and add the coffee.
  • Next add the walnuts (they do not need to be chopped), and crushed biscuits. Use your dough whisk to combine the ingredients.
  • Line your 22cm square tin and press the mixture in.
  • Use paper towels (triple thickness) to press down on the surface of the base mixture. This will create an even surface and soak up any excess butter.
  • Place in the fridge to set. While it chills prepare the icing.


  • Sift your icing sugar into a medium sized bowl
  • Add your melted butter and strong coffee, and stir until you have a smooth consistency.
  • If your icing is too runny add more icing sugar in small amounts until you get the consistency you want (tablespoon amounts at a time).
  • Use a platte knife to spread the icing over your base.
  • Add roughly chopped walnuts to the top for a more rustic look.
  • Return to the fridge to until chilled and set.