Heat oven to 350°F. Lightly spray cookie sheet with cooking spray. Remove dough from can. Cut dough crosswise into 9 slices.
Using kitchen scissors, cut the circumference of each slice 7 times at a diagonal angle about 1-inch deep to form "petals." Place on cookie sheet. Form gently back into a round.
Brush dough with egg white; sprinkle with poppy seed. Bake 15 to 20 minutes or until golden brown. Serve warm.