Preheat oven to 325 degrees F and generously coat a 9x13-inch dish with nonstick cooking spray.
Mix cake mix, melted butter and one egg to a soft dough. Press into the bottom of the pan.
Mix powdered sugar, softened cream cheese and two eggs until smooth, about 1-2 mins. Pour on top of crust.
Bake at 325 degrees F for 40-45 minutes until top is a light golden brown. (Cake should seem a little soft & gooey in the center, hence the name!)
Cut into squares and EAT THE WHOLE PAN YOURSELF.
Okay, maybe share some. Your choice.