Thaw one roll of fillo dough, following thawing instructions on package to make phyllo flatbreads.
Preheat oven to 375ºF.
Unroll and cover the fillo pastry sheets with a damp towel or plastic wrap to prevent drying out.
Place one sheet of fillo on work surface and lightly coat with egg white mixture.
Layer and repeat with 9 more sheets.
Cut layered fillo in half widthwise to create two flat bread bases and place on a baking tray.
Reroll unused fillo sheets and follow storing instructions on package.
Bake for 8 minutes or just until the fillo starts to brown. Remove from oven and cool. Top phyllo flatbreads with your favorite toppings.