Heat oven to 375°F. Spray 2 cookie sheets with cooking spray.
If using crescent rolls: Unroll dough; separate into 8 rectangles. Place rectangles on cookie sheets. Firmly press perforations to seal. If using dough sheets: Unroll dough; cut into 8 rectangles. Place rectangles on cookie sheets.
Place 4 meatball halves lengthwise down center of each rectangle. Top each with 2 tablespoons pasta sauce and 2 tablespoons mozzarella cheese. With scissors or sharp knife, make cuts 1 inch apart on each side of filling. Alternately cross strips over filling. Brush dough with beaten egg; sprinkle with Parmesan cheese.
Bake 15 to 20 minutes or until golden brown.