Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with non-stick cooking spray or butter.
In a medium bowl, beat the softened cream cheese until smooth and fluffy, about 2 minutes.
Spread the lemon pie filling evenly across the bottom of your prepared baking dish.
Drop spoonfuls of the beaten cream cheese over the pie filling, distributing as evenly as possible.
Sprinkle the dry lemon cake mix evenly over the cream cheese and pie filling layers.
Pour the melted butter over the cake mix, trying to cover as much of the dry mix as possible in a zig-zag pattern for even coverage.
Bake in the preheated oven for 45-50 minutes, or until the top is golden brown and the edges are bubbling slightly.
Allow to cool for at least 5 minutes before serving.