Preheat the oven to 350°F.
Prepare a cinnamon-sugar mixture by mixing cinnamon and ½ cup sugar in a small bowl until combined well.
In a separate medium mixing bowl, combine cream cheese, remaining sugar, egg, and vanilla, mixing until completely smooth.
Spray a 9x13 baking pan with cooking spray and sprinkle 1-2 tbsp. of the cinnamon-sugar mixture on the bottom.
Open and unroll one tube of the crescent rolls. Press the seams together to form one rectangular piece. Place into the bottom of the pan, covering each end completely.
Pour the cream cheese mixture over the dough in the pan, spreading across evenly.
Unroll the second tube of dough and press the seams together again. Then, place it over the cream cheese mixture to cover completely.
Use a brush to spread the melted butter evenly over the top layer of dough. Sprinkle the remaining cinnamon-sugar mixture over top.
Bake for 25-30 minutes, until the crescent dough has puffed up and is golden brown.
Place on a wire rack to cool completely and transfer to the fridge until chilled.
Cut and serve.