110g unsalted butter
110g caster sugar
2 eggs
1 heaped tsp coffee granules dissolved in 25ml water
90g self-raising flour
25g Mornflake Superfast Oats blitzed
35g walnuts, chopped
THE ICING – makes slightly more than needed, but you can use it for the centre and top
150g unsalted butter
300g icing sugar
2 tsp instant coffee dissolved in 2 tsp hot water