In a large skillet over medium heat, fry sausage and drain grease.
Use a hamburger chopper to cut the meat down in small pieces while frying.
Add bell pepper, onion and mushrooms, if using.
Sauté until almost tender about 3-5 minutes.
Place sausage mixture in a bowl with softened cream cheese.
(I usually soften cheese in microwave but you can leave out for several hours on counter).
On sprayed cookie sheets spread out the crescent rolls.
(Spread each can on a different cookie sheet).
Pinch the dough together to seal edges well.
Spread half of the the sausage/cream cheese mixture in the center of one of the crescent rolls.
Repeat process with other crescent roll.
Then bring sides together and pinch together.
(I usually make horizontal cuts in the dough so that they form a kind of braid over the sausage mixture.)
Spread egg white on top of each pastry with a pastry brush.
Sprinkle each "braid" with poppy seeds.
Bake as directed for crescent rolls (375 for about 15-20 minutes), but you need to keep in oven until golden brown.
It always takes longer – about 20-30 minutes.
Makes two large croissants.