01 - Line a large baking tray or flat surface with parchment paper to prevent sticking during assembly.
02 - Process Oreos in a food processor until finely crushed. Transfer to a bowl and mix with powdered sugar, melted butter, and softened cream cheese until a thick, sticky dough forms.
03 - Place the Oreo mixture between two sheets of parchment paper. Roll out to a rectangle approximately 1/2 inch thick, ensuring even thickness throughout.
04 - In a chilled bowl, beat heavy cream with powdered sugar and vanilla extract until stiff peaks form. Gently fold in food coloring until evenly tinted to desired Halloween shade.
05 - Spread the colored whipped cream evenly over the rolled-out Oreo base, leaving a 1-inch border on one long side. This border will help seal the roll.
06 - Using the parchment paper to guide you, carefully roll the mixture into a tight log starting from the long edge without the border. Place seam-side down on the prepared tray.
07 - Refrigerate for at least 1 hour or until firm enough to slice cleanly without losing shape.
08 - Drizzle with melted chocolate, sprinkle with Halloween decorations, and add candy eyes if desired. Slice into 1-inch portions with a sharp knife and serve cold.