Place sausage in a large, deep skillet. Cook over medium-high heat until evenly brown. Drain, crumble and set aside.
Place thawed broccoli in a small saucepan, cover and cook over medium-low heat until tender, about 5 minutes.
In a large bowl, mix together sausage, broccoli, sour cream and cheese.
Place 1 package of crescent rolls flattened on a 9x13 inch baking dish. Cover with broccoli mixture. Place remaining crescent rolls on top of mixture and pinch seams to seal. Brush top with egg white.
Bake in preheated oven until golden brown, about 20 minutes.
