Preheat oven to 350 degrees and line a regular sized cupcake pan with paper liners.

For the crust. Combine Oreo cookie crumbs, butter, and sugar. Press 1 Tablespoon of the crumb mixture into the bottom of each liner. I used a Tablespoon measuring spoon and pressed it down with the spoon.

For the cheesecake: Beat cream cheese and sugar at medium-low speed with an electric mixer for 1 minute. Add eggs, cocoa, sour cream, buttermilk, vanilla, vinegar, and food coloring and mix until just combined. Using a cupcake scooper, fill each tin about 3/4 of the way full. You should get between 30-36 cheesecakes depending on the size of your pans. Mine two pans were a little different in size.

Bake for 25-35 minutes or until centers are set. Cool cheesecakes in the pan, cover, then chill in the fridge overnight (or at least 8 hours). I chilled mine in the cupcake pan. Cheesecake is better as it chills longer. I remove the paper liners before topping with frosting.

For the edible blood: Mix 4 parts corn syrup to 1 part water. Add red food coloring until desired color is reached. Add a drop of blue food coloring to give it an authentic color. Add cornstarch until desired thickness is reached.

For the frosting: Beat the cream cheese and butter until smooth. Slowly add the powdered sugar and vanilla and beat until fluffy. Spread or pipe a thin layer of frosting on top before serving. Drizzle edible blood if desired and garnish with the meat cleavers. Serve cold and keep stored in the refrigerator.