In a small bowl, combine flour, confectioners' sugar and salt. Cut in butter to form a dough. Pat lightly into an ungreased 11x7-in. baking pan. , Arrange peaches over the crust; set aside. In another bowl, beat eggs. Whisk in the sugar, salt, flour and sour cream until mixture is smooth. Pour over the peaches. , Bake at 450° for 10 minutes. Reduce heat to 325°; bake 35 minutes more or until center is set. Serve warm or chilled. Store in the refrigerator.