2 1/2 cups all-purpose flour
3 tablespoons sugar
2 teaspoons baking powder
3/4 teaspoon salt
10 tablespoons (1 1/4 sticks) unsalted butter, cut into 1/2-inch pieces and chilled
5 tablespoons vegetable shortening, cut into 1/2-inch pieces and chilled
3/4 cups cold buttermilk
6 tablespoons sugar
1 teaspoon ground cinnamon
3 tablespoons unsalted butter, softened
3 tablespoons golden raisins, chopped
4 Golden Delicious apples (see note)
2 egg whites, lightly beaten