Preheat the Oven: Preheat your oven to 350°F (175°C).
Prepare the Baking Dish: In a greased 9x13 inch baking dish, spread the can of pecan pie filling evenly across the bottom.
Add the Cake Mix: Pour the yellow cake mix over the pecan filling. Make sure to spread it evenly.
Add Pecans: Sprinkle the chopped pecans over the cake mix.
Drizzle Butter and Water: Pour the melted butter evenly over the mixture, followed by pouring the water on top.
Do Not Stir: Resist the temptation to stir; just let it be.
Bake: Place the dish in the oven and bake for 40-45 minutes, or until the top is golden brown and bubbly.
Let It Cool: Allow the cake to cool for about 10 minutes before serving.
Serve: Enjoy it warm, ideally paired with a scoop of vanilla ice cream!