Prosciutto and Gruyere Pastry Pinwheels
Source: Bon Appetit March 2003

These hors d'oeuvres are light, flaky and very yummy.  They are also simple to prepare and make a big impression - just what you want in party food.
Makes about 30

Place pastry sheet on work surface.    Cut in half, forming two 9 1/2x4 3/4 inch rectangles.  Arrange half of prosuiutto on 1 rectangle, leaving 1/2 inch border along 1 side.   Sprinkle Prosciutto with half of basil, then top with half of cheese.   Brush plan border with egg glaze. Starting at long side opposite border, roll up pastry jelly-roll style, pressing gently to seal long edges.  Wrap in plastic.   Repeat with remaining pastry.   Refrigerate until firm, at least 3 hours and up to 2 days.  

Preheat over to 400° F.  Line 2 backing sheets with foil.  Lightly spray with vegetable oil spray.  Cut each pastry roll into about thirty 1/4 inch thick rounds.  Transfer pinwheels to prepared sheets.  Bake until golden, about 16 minutes.  Transfer to platter, serve.