Preparation

• In a large bowl, combine the flour, sugar, salt and baking powder; cut in shortening until the mixture resembles coarse crumbs. Combine yolks and cold water. Sprinkle over dry ingredients; toss with fork. If needed, add additional water, 1 tablespoon at a time, until mixture can be formed into a ball.
• Divide dough in half. On a lightly floured surface, roll half the dough to fit a 15x10x1-in. baking pan.
• Sprinkle apples with lemon juice; arrange half of them over dough. Combine the sugars, cinnamon, nutmeg and salt; sprinkle half over apples. Top with remaining apples; sprinkle with remaining sugar mixture.
• Roll remaining dough to fit pan; place on top of filling and seal edges. Brush with milk and sprinkle with sugar. Cut vents in top crust. Bake at 400° until crust is golden brown and filling is bubbly, 50 minutes.