Halloween Worm Dirt Cups

Whisk together milk, cornstarch, sugar and cocoa in a large saucepan over medium heat. Bring to a boil, whisking constantly. Continue to boil 1 minute, whisking. Remove the pan from the heat and stir in vanilla. Transfer the pudding to a large bowl. Press a piece of plastic wrap onto the surface of the pudding and refrigerate until pudding is cooled completely. Place a heaping tablespoonful of the Oreo crumbs into the bottom of each plastic cup. Divide the chocolate pudding between the cups, filling each cup about 3/4 full. Press several Gummi worms into the pudding in each cup, arranging so part of each worm dangles over the lip of the cup. Spoon a heaping tablespoonful of the Oreo crumbs over the top of the pudding in each cup. Arrange more Gummi worms over the Oreo crumbs and refrigerate until ready to serve.