Heat oven to 375° F. Line a 9-inch pie pan with pastry, trimming edges.
In large bowl, combine apples, pecans, sugar, flour, vanilla, cinnamon, ginger, and mace; toss well to blend. Transfer apple mixture to pastry-lined pan.
Prepare Crumb Topping; spread evenly over apple filling. Bake pie 45 minutes or until apples are tender.
In small bowl, combine 1/2 cup all-purpose flour, 1/2 cup packed brown sugar, and 1/4 tsp cinnamon. With pastry blender or fork, cut in 1/4 cup - 1/2 stick) butter until mixture is crumbly.Makes 8