Creating your Easter Dirt Cake Casserole is an easy and enjoyable process if you follow these steps:

1. Bake the Cake: Prepare the chocolate cake mix according to the package instructions. Pour the batter into a 9×13-inch baking dish and bake as directed. Allow it to cool completely.
2. Prepare the Pudding: In a medium bowl, whisk together the instant chocolate pudding mix and milk. Stir until thickened and set aside.
3. Mix the Cream Cheese: In another bowl, mix the softened cream cheese with the powdered sugar until smooth.
4. Combine with Whipped Topping: Fold the whipped topping into the cream cheese mixture until fully incorporated and creamy.
5. Layer the Cake: Once the chocolate cake has cooled, crumble it into bite-sized pieces and spread half over the bottom of a clean 9×13-inch dish.
6. Add the Pudding Layer: Pour the chocolate pudding over the crumbled cake, spreading it evenly.
7. Spread Cream Cheese Mixture: Layer the cream cheese mixture over the pudding, smoothing it with a spatula.
8. Top with Oreos: Sprinkle the crushed Oreo cookies over the cream cheese layer, ensuring an even coating.
9. Chill the Casserole: Cover the dish with plastic wrap and refrigerate for at least 4 hours, or overnight if time permits.
10. Decorate Before Serving: Before serving, add gummy worms and fresh mint leaves on top to mimic a garden look.