Prepare the Chocolate Cake

1. Bake the Cake: Preheat your oven according to the package instructions. Prepare the chocolate cake mix as directed on the package and bake it in a 9×13-inch baking pan. Allow it to cool completely after baking.

Prepare the Pudding Layer

1. Make the Pudding: In a medium bowl, whisk together the instant chocolate pudding mix and milk until smooth. Let it sit for about 5 minutes to thicken.

Assemble the Dirt Cake

1. Crush the Oreos: While the pudding is thickening, place the Oreo cookies in a plastic bag and crush them into fine crumbs using a rolling pin or a mallet.
2. Layer the Ingredients: Once the cake is cooled, crumble it into the bottom of a large serving dish or individual cups. Then, layer half of the pudding over the cake.
3. Add the Whipped Topping: Spread half of the whipped topping over the pudding layer, followed by half of the crushed Oreo cookies.
4. Repeat the Layers: Repeat the layers with the remaining cake, pudding, whipped topping, and crushed cookies.

Decorate the Cake

1. Top with Gummy Worms: Scatter gummy worms over the top layer of crushed cookies to give it an extra spooky touch.
2. Add Optional Decorations: If desired, add candy pumpkins or chocolate spiders for added Halloween flair.

Chill and Serve

1. Chill the Cake: Cover the dessert and refrigerate for at least 1.5 hours to allow the flavors to meld.
2. Serve: When ready to serve, scoop out portions and enjoy your Halloween Dirt Cake!