1Heat oven to 450°F. Remove pie crusts from pouches. On lightly floured surface, unroll and stack crusts one on top of the other. Roll to 17x12-inch rectangle. Fit crust into 15x10x1-inch pan, pressing into corners. Fold extra crust under, even with edges of pan.
2In small bowl, mix granulated sugar, flour, cinnamon, nutmeg, salt and lemon juice. Add apples, stirring to coat. Spoon apple mixture into crust-lined pan.
3Bake 33 to 38 minutes or until crust is golden brown and filling is bubbly. Cool in pan on cooling rack 45 minutes.
4In small bowl, mix powdered sugar and milk until well blended. Drizzle over pie. Let stand until glaze is set, about 30 minutes.