Preheat oven to 350 degrees.  Line two baking sheets with parchment.  In your food processor bowl, add the flour, cheese, salt, cayenne pepper and butter.  Pulse until this mixture forms into a dough ball.  This will take a few minutes of pulsing.  Just when the dough starts to form a ball, remove from the food processor and knead a few times on cutting board.  Divide the dough in half.  From each half you will make 12 approx.  1 1/2 inch balls.  It is easy to roll each half into a 12 inch rope and then cut the rope into 1 inch pieces, Roll each piece into a ball.  After you have placed the dough ball on the baking sheet - with the bottom of a glass, press each into appox. a 2 inch round.  Sprinkle each round lightly with additional cheese, bake for 20 minutes.  Cool.  Store in airtight container for 1 week or freeze for future use.  Makes 24.