Creating the Lemon Cream Cheese Dump Cake is incredibly straightforward. Just follow these steps:

1. Preheat the Oven: Set your oven to 350°F (175°C).
2. Prepare Baking Dish: Grease a 9×13-inch baking dish to prevent sticking.
3. Mix Cake Batter: In a large mixing bowl, combine the yellow cake mix and lemon-lime soda until just mixed. Do not over-mix.
4. Pour Batter into Dish: Spread the batter evenly into the prepared baking dish.
5. Make Cream Cheese Layer: In another bowl, beat the softened cream cheese, granulated sugar, powdered sugar, eggs, zest, and lemon juice until smooth and creamy.
6. Add Cream Cheese Layer: Gently spoon dollops of the cream cheese mixture over the cake batter, spreading it slightly but not fully mixing.
7. Drizzle Melted Butter: Pour the melted butter evenly over the top of the cake mixture for added richness.
8. Baking: Bake in the preheated oven for about 45 minutes or until the cake is set and golden brown on top.
9. Cool: Remove the cake from the oven and let it cool for 15-20 minutes before serving.
10. Serve and Enjoy: Slice and enjoy your delicious Lemon Cream Cheese Dump Cake warm or chilled.