Line a 9-inch pie plate with pastry. Trim and crimp edge as desired. Layer nuts evenly in bottom of pastry.
In a food processor bowl, combine cream cheese, blue cheese, half-and-half, eggs, Worcestershire sauce, and pepper. Cover and process until smooth.* Pour into pastry over pecans.
Bake in a 350 degree F oven for 30 to 35 minutes or until filling is set. Cool on wire rack for 1 hour. Cover and chill for at least 2 hours or up to 24 hours.
To serve, cut into 12 wedges. If you like, garnish with chives and chive blossoms. Makes 12 appetizer servings.
If you don't have a food processor, you can combine the mixture by beating with an electric mixer.