Unroll crescent roll dough and separate into two rectangles; place on an ungreased baking sheet and press the perforations together.
In a small mixing bowl, beat cream cheese, sugar and vanilla until smooth.
Spread over half of each rectangle; fold over opposite half of rectangle and pinch to seal.
Brush with butter; sprinkle with cinnamon-sugar if desired.
Bake at 350° for 15-20 minutes or until golden brown.