Chocolate and walnut slice


I first saw this slice on Jane’s, (The Shady Baker) July 2015 In My Kitchen post.  I was immediately smitten by the idea of it.  In my view there is no better combination than chocolate, walnuts and rolled oats.  It is a combination made in heaven.  I commented that her slice looked and sounded wonderful and Jane generously emailed me the recipe.

I can assure you the slice did not disappoint.  It is to die for.  I mentioned to Maus last night that I don’t think I should make it again as it is so good, I can’t get it out of my mind and, subsequently, I am eating  much more of it than my waistline would suggest is wise.

The base is firm and crunchy, the filling is soft and gooey and the icing is sweet and chocolaty:  very good indeed.

I searched Jane’s blog for the recipe so I could link this post back to it but it appears Jane hasn’t posted it.  As it is so yummy I decided the recipe must be shared.  Jane mentioned that the recipe is from the 2015 Red Tractor Designs calendar. 


  • ½ cup self-raising flour, sifted
  • pinch salt
  • 1 cup rolled oats
  • ½ cup brown sugar
  • 125g butter, melted


  • 70g butter
  • 70g dark chocolate, chopped
  • cup castor sugar
  • 1 egg, beaten
  • cup self-raising flour, sifted
  • cup plain flour, sifted
  • cup milk
  • 70g walnuts, finely chopped
  • ½ tsp vanilla extract


  • 15g butter
  • 30g dark chocolate
  • cup icing sugar, sifted
  • 1 tsp vanilla extract
  • 2 x 20 ml tbs hot water



  1. Preheat your oven to 180°C.
  2. Line a slice/brownie tin with baking paper.  My tin is 27.5cm x 17.5cm x 3.2cm and it was perfect so choose a tin about that size.
  3. Mix all the dry ingredients into a bowl.
  4. Melt the butter and then add it to the dry ingredients.  Mix well.
  5. Press the dough into the prepared tin.
  6. Bake in preheated oven for 10 minutes.


  1. Put the butter and chocolate into a mixing bowl and melt.  I did this in my microwave but Jane suggested placing the bowl over hot water – either way would do.
  2. Add the sugar and beaten egg, mix well.
  3. Add the sifted flours, milk and vanilla, mix well.
  4. Stir in the walnuts.
  5. Spoon filling over hot base and bake for a further 20 minutes.
  6. Remove from oven.  Cool before icing.


  1. Melt butter and chocolate.
  2. Add sifted icing sugar, vanilla and hot water.
  3. Beat until smooth.
  4. Spread icing evenly over slice.  Top with extra walnuts, if desired.

24 thoughts on “Chocolate and walnut slice

  1. Oh my Glenda it really does look so scrumptious… might have to try this recipe sometime. But at the moment trying to work off some clotted cream that seems to be hanging around the hip area 🙂

  2. Ooooh, how scrumptious! I LOVE walnuts in cakes and slices, especially with chocolate. Thanks for sharing the recipe xx PS not sure my waistline can cope either! 😉

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