Mix all ingredients together in a bowl, form a ball and place into the fridge for 30 min. Once cooled down, cut into desired shapes and bake for 10 min on 190°C.

Mix all ingredients together and cover up until needed, as the 'blood' icing will otherwise dry out. For a more shiny result, leave out the cocoa.

Dip the walnut halves into the fake blood until fully covered. Place on the side for a minute to let any excess drip off.

Shape the white fondant into little balls. Cut into one side with a knife to split the ball and press the back of the knife into the other side of the ball to make a cross. Place in the fridge for a few minutes for the fondant to dry out. When hard, paint the roots of the teeth black and dip into fake blood icing.

Pick a frosting of your choice to cover the cookies (I simply whipped up some cream cheese with a bit of icing sugar) and place brains and teeth on top. Finally sprinkle some of the leftover fake blood over the cookies to create a blood splattered effect.