Begin by whisking the instant pudding mix with cold milk in a mixing bowl until the mixture thickens and becomes smooth, about 2-3 minutes. Once set, give it a gentle stir to ensure even consistency.
Spoon or pipe the creamy pudding evenly into each serving cup, filling them about three-quarters full. Tap the cups gently on the counter to settle the pudding and remove any air bubbles.
Place the filled cups in the refrigerator to chill while you prepare the toppings. This helps the pudding stay firm and chilled before decorating.
Crush the chocolate cookies into fine crumbs using a crushing tool or food processor. Spread or sprinkle the cookie crumbs generously over each pudding cup to resemble dirt or soil.
Decorate each pudding cup with a coffin-shaped cookie or a graham cracker cutout, positioning it partially buried in the cookie crumb dirt. Add a candy tombstone or spooky decoration nearby for a haunted graveyard effect.
Once decorated, serve immediately or keep refrigerated until ready to present. The final product showcases creamy pudding topped with crunchy cookie dirt and playful spooky accents, perfect for Halloween festivities.