Heat oven to 375 degrees F. Coat cookie sheets with nonstick cooking spray.
In a shallow bowl, combine sugar and cinnamon; mix well and set aside.
Place 2 sheets of pastry dough side by side lengthwise on a work surface and
pinch the middle seam together. Brush dough with some of the beaten egg and sprinkle
with 5 tablespoons of the cinnamon-sugar mixture.
Roll one narrow end jellyroll-style into the center. Repeat with the other end.
Slice into 12 pieces. Brush one side of each slice with remaining beaten egg and
dip in remaining cinnamon-sugar mixture. Place coated side up on the cookie sheets.
Bake for 25 to 28 minutes, or until golden.
Allow to cool for 5 minutes, then
remove to a wire rack to cool completely.