Espresso and walnut cake

There is something about these two flavours that work so well together. However, they can often be a little bland, so here I’ve made them both really shout out. Strong espresso coffee is in both the cake and the cream cheese frosting. As for the walnuts, they are blitzed into the cake batter, which also contains some walnut oil. Then the walnuts on top are made extra special by caramelising in sugar.