Onion and prosciutto tart

 
                         Onion and Prosciutto Tart
 
 Recipe By     : Miriam P. Posvolsky
 Serving Size  : 8    Preparation Time :0:00
 Categories    : Hors d'Oeuvres And Dips
 
   Amount  Measure       Ingredient -- Preparation Method
 --------  ------------  --------------------------------
      1/2  lb            puff pastry
    4      large         onions -- chopped
    3      ounces        prosciutto -- diced
      1/2  teaspoon      thyme
      1/2  teaspoon      rosemary
    2      tablespoons   olive oil
   12      large         black olives in oil -- pitted
                         freshly ground black pepper
                         salt if needed
    1                    egg
 
 Cook onions in oil with herbs until onions are transparent. Add prosciutto
 and cook 3 minutes. Season with pepper and check salt.
 Chill.
 Roll out dough into a rectangle 11" by 9.
 Cut 4 strips  of dough to make the borders and press them on the edges of
 rectangle.
 Transfer to cookie sheet and baste edges with beaten egg.
 Chill 1/2 hour.
 Pre- heat oven to 425.
 Spread onion mixture on prepared dough.
 bake 30 minutes . Reduce heat to 300, decorate tart with sliced olives and
 continue baking another 15 minutes.
 
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 NOTES : Serve cut into squares as an appetizer.