In a medium skillet, lightly brown sausage and drain. While sausage is still hot, add cream cheese and stir until cheese is melted and mixture is creamy. Cool completely.
Separate crescent rolls and arrange into two rectangles. Form log of sausage mixture lengthwise down center of each rectangle. Add pepperoni if desired. Fold over the long sides of pastry to cover sausage log. Place on ungreased cookie sheet, seam down. Brush with egg white and sprinkle with poppy seeds if desired.
Bake 12-18 minutes until crust is golden. When completely cooled, slice into one and one-half inch slices.
Notes
If you make more sausage than is needed for the rolls, it works well as breakfast or lunch leftovers.