Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9x13 inch baking pan.

Line bottom of baking pan with 1 can of crescent rolls. Pinch all seams together to seal.

In a large bowl, mix together cream cheese, white sugar, lemon juice, vanilla extract and sour cream. Spread filling on top of rolls. Place second can of rolls on top of filling.

Bake in preheated oven for 20 to 30 minutes.

In a small bowl, stir together confectioners' sugar, milk and butter. After Danish has cooled, drizzle with icing.