Puff Pastry Pretzels

Preheat oven to 425°F. Place pastry on a sheet of parchment paper; Sprinkle evenly with 1/3 cup Parmesan; Top with another sheet of wax paper. Roll out pastry slightly, flip pastry over, peel off paper and sprinkle evenly with another 1/3 cup cheese. Cover with parchment paper; Roll out into a 12 by 10inch rectangle. Remove parchment paper. Cut dough lengthwise into 24 strips. Shape each into a 2 1/2 inch pretzel; Arrange on 2 greased baking sheets. Brush dough with egg yolk; Sprinkle with remaining 1/3 Cup cheese. Bake until golden, rotating pans once, 12 minutes. Serve with mustard for dipping.