Onion And Prosciutto Tart

Grrrrrgh!
Course : Dips
From: HungryMonster.com
Serves: 8
 

Ingredients:

1/2 pound 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
1 teaspoon freshly ground black pepper
1 teaspoon salt if needed
1 large egg
 

Preparation:

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. Preheat oven to 425F. Spread onion mixture on prepared dough. Bake 30 minutes . Reduce oven temperature to 300F, decorate tart with sliced olives and continue baking another 15 minutes.