Preheat oven to 450°. Roll dough into two 7-inch circles; set aside.
Mix cheeses and egg in medium bowl. Spoon cheese mixture onto centers of each circle. Fold each circle in half to form semicircle; press edges together to seal. Beginning at one end, stretch sealed edge and fold over, pinching to seal. Arrange on greased baking pan; poke 5 holes in top of each with toothpick.
Bake 20 minutes or until golden and puffed. Let stand on wire rack 15 minutes before serving. Serve with Sauce, heated.
TIP: Also delicious with 1/2 cup chopped pepperoni stirred into cheese mixture. Cost per recipe*: $5.63. Cost per serving*: $2.81. *Based on average retail prices at national supermarkets.