Preheat oven to 350 degrees and line two cookie sheets with parchment paper.

Using a standing mixer, beat the butter, sugar, light brown sugar, eggs, corn syrup, and vanilla until light and fluffy.

In a medium bowl, whisk the flour, cocoa powder, cornstarch, salt and baking soda. Gradually beat the dry ingredients into the wet until a dough forms.

Using a medium cookie scoop, scoop out dough mound. Roll into a ball using your hands and place onto the cookie sheet. Lightly press down to make a thick disk.

Bake in the oven for 15-18 minutes or until firm around the edge. Allow to cool completely before adding icing.

Using a standing mixer, beat egg white, cream of tartar, powdered sugar, and vanilla until combined and holds a soft peak, about 5 - 7 minutes. If too runny, beat in another ½ cup powdered sugar.

Mix in 5-7 drops or more if needed of super red food coloring till it looks dark as blood.

Beat in about 2 tablespoons of water to ‘thin’ the icing out and falls off a spoon like lava.

For this messy part, cover the area with trash bags.

Dip a fork into red icing and fling at the cookies to create a blood splatter look.

Be creative with your blood splatter! Once your cookies are covered in red icing allow to dry 1 hour before serving!