Chocolate Truffle Cookies

In the microwave or in a metal bowl over a pan of simmering water, melt cooking chocolate, 170g of the chocolate chips and the butter stirring occasionally until smooth. Remove from heat and set aside to cool. In a large bowl, whip eggs and sugar until thick and pale, about 2 minutes. Stir in the vanilla and the chocolate mixture until well mixed. Combine the flour, cocoa, baking powder and salt; gradually stir into the chocolate mixture. Fold in remaining chocolate chips. Cover dough and chill for at least an hour or overnight.

Preheat the oven to 180 C / Gas mark 4. Roll chilled dough into 2.5cm balls. Place on ungreased baking trays so they are 5cm apart.

Bake for 9 to 11 minutes in the preheated oven. Allow cookies to cool on baking tray for 5 minutes before removing to a wire rack to cool completely.