Preheat oven to 375 F. Roll out pastry dough and press into 9-inch springform or tart pan. Bake 10 minutes.
In large nonstick skillet, heat olive oil. Add leeks and saute until browned, about 10 minutes. Add raisins and ham; cook 5 minutes.
In bowl, combine ricotta cheese, eggs and Parmigiano-Reggiano cheese; whisk well. Add leek mixture and basil; stir well.
Spoon ricotta mixture into tart shell. Bake 40 minutes or until puffed, golden and set.