- Preheat oven to 350°F (175°C). Grease a 9x13-inch baking pan with non-stick spray. 
- Mix 1 cup granulated sugar with softened cream cheese, egg yolk, and vanilla extract until smooth. 
- Sprinkle 1-2 tablespoons of cinnamon sugar (mix remaining sugar and cinnamon) evenly on the bottom of the greased pan. 
- Roll out one dough can, press seams to seal, and lay it evenly in the pan. 
- Spread cream cheese mixture evenly over the dough. 
- Roll out the second dough can, seal seams, and place it over the cream cheese layer. 
- Beat the egg white until frothy and brush it evenly on top of the dough. 
- Sprinkle remaining cinnamon sugar over the top. 
- Brush melted butter evenly over the top layer. 
- Bake for 25-30 minutes until the top is golden brown and puffed. 
- Cool at room temperature for 30 minutes, then refrigerate for at least 2 hours before slicing.