Preheat the oven to 180C, Gas Mark 4

Cream the butter, sugar and condensed milk together in a large bowl until pale and creamy

Mix in the flour, cranberries and white chocolate chips

Knead into a dough.

Take small handfuls of the dough and flatten. Place on baking trays lined with baking parchment, leaving room for the cookies to expand.

Bake for 15-20 minutes, until golden brown on the edges