Use a 13x9 cake pan. Roll out one pkg. of crescent rolls on the bottom of the pan, pressing down with your fingers to seal the rolls together.
Add the cream cheese mixture next, then top with the other pkg. of creasent rolls. Unroll cresent rolls over the top of the cream cheese pulling to the edges of the pan and pinch dough together to seal over cheese mixture.
Use only part of the egg whites to spread lightly over the top crust (optional).
Bake at 325 degrees for 25-30 minutes or until golden brown. Chill a couple of hours before cutting into squares.