Preheat your oven to 350°F. Apply parchment paper to your 9x9-inch baking pan.
Mix the melted butter, 1 egg and cake mix in a bowl until it becomes a soft dough mix. Mold to the the bottom of your baking pan.
In a mixer, combine your other ingredients: 2 eggs, cream cheese, sugar, and vanilla. Mix together until it turns to a smooth paste, then spread onto the cake.
Bake for 45 minutes or until it turns golden brown. You want the center to be soft.
Must be COMPLETELY cooled before you attempt to cut and enjoy.