Preheat oven to 350 degrees. Grease your 9x13 pan with cooking spray.
Take one can of crescent dough and place into pan, making sure to cover the entire bottom. If your crescent dough has seams, press the seams together to seal them.
In a medium bowl, combine cream cheese, 1 cup of the sugar, cinnamon and vanilla. Spread over crescent dough in pan, creating an even layer.
Lay the second crescent dough over the top of the cream cheese mixture. If your dough has seams, lay it on a cutting board first to press the seams together.
Pour ¼ cup of the melted butter over the top and make sure the entire top has butter on it. Sprinkle with remaining ¼ cup of sugar.
Bake for 25 minutes on the lower rack in your oven, until top is browned.
To decorate: Working in sections, use a pastry brush to brush on butter and top with generous amounts of sprinkles until entire top is covered. Let cool completely and refrigerate.
Once cool, slice into bars and serve at room temperature.