Preheat the oven to 350 degrees and prepare a 9x13 pan with a light coating of cooking spray.
Spread the lemon pie filling evenly across the bottom of the prepared pan.
Carefully distribute half of the cake mix over the lemon filling in an even layer.
Place the sliced cream cheese evenly over the cake mix.
Top the cream cheese with the remaining cake mix.
Pour the melted butter evenly over the cake mix.
Bake in the preheated oven for 50-55 minutes or until the top is golden brown.
Remove from the oven and allow to cool for 10 minutes before serving.