Pour in the chopped walnuts to the cookie dough. You’ll probably want to use a wooden spoon at this stage to mix them through ...

"Walnut" cookies are a true classic. These cookies symbolized family warmth and the culinary creativity of our mothers and grandmothers, who could create something special from simple ingredients.

Scatter over the remaining chopped walnuts. Roll up the sponge again and place on a serving plate, seam side down. Arrange the whole walnuts on top and dust with icing sugar before serving.