Place foil baking cups in each of 12 muffin cups; set aside. Combine cookie crumbs and melted butter in a bowl; sitr to mix. Spoon 2 heaping tablespoonfuls into each baking cup; press into the bottom and up the sides. Beat together milk, whipping cream, pudding mix and food coloring with an electric mixer on high speed for one minute; sitr in chocolate chips. Spoon pudding mixture into prepared muffin cups. Chill one hour. Before serving, place a pretzel stick into each "cauldron."
Top these adorable "cauldrons" with gummy worms for a real treat!