Claire Ptak’s Chocolate Wafer Cookies

These are like Oreo cookies. This recipe makes six logs. You can scale it – icing quantities would need to be adjusted also.

12ozs (350g) butter

1lb 2ozs (500g) caster sugar

1 tsp vanilla extract

2 free-range organic eggs

5ozs (150g) cocoa powder

13ozs (375g) plain flour

2½ tsp baking powder

¼ tsp salt

Vanilla Icing:

2½ fl ozs (65ml) milk

4ozs (110g) unsalted butter

1lbs 1ozs (475g) icing sugar

½ tsp vanilla extract

¼ scraped vanilla bean

First make the logs: Cream together the butter and the sugar together very well. Add the vanilla extract and eggs. Sift together the cocoa powder, flour, baking powder and salt.

Roll into logs and freeze.

Slice the log into ½cm (¼ inch) thick and bake at 170C/325F/Gas Mark 3 for 8-10 minutes – let cool on parchment paper.

For the icing: Cream the butter and half the icing sugar. Add the liquid. Then cream in the rest of the icing sugar on a low speed – about 3 minutes until creamy.

Pipe a blob of icing in the centre of one biscuit, then press another on top so you can just see the icing coming through.