Preheat oven to 325 degrees. Spray 9X13 pan with cooking spray. Cover bottom of pan with 1 pkg of crescent rolls. Push seams together.
Combine cream cheese, vanilla and egg yolk. Pour over crescent rolls in pan. Cover with 2nd pkg of crescent rolls. Push seams together. Pour melted butter over the top of casserole. Sprinkle cinnamon, sugar and pecans over top. Bake 20-25 minutes or until golden brown.