1. In a bowl, whisk together pudding mix and cold milk for 2 minutes until thickened, then refrigerate for 5–10 minutes.

2. Crush chocolate sandwich cookies into fine crumbs using a food processor or a sealed bag and rolling pin.

3. In each cup, layer a thin layer of cookie crumbs, followed by 2–3 tablespoons of pudding, then a small layer of whipped topping; repeat and finish with cookie crumbs.

4. Press gummy worms halfway into the top layer and add candy pumpkins for decoration.

5. Chill assembled cups for at least 30 minutes before serving.