In a large bowl, combine the apples, cream, tapioca and lemon juice; let stand for 15 minutes.
Meanwhile, roll out pastry to fit a 9-in. pie plate. Transfer pastry to pie plate. Trim pastry to 1/2 in. beyond edge of plate; flute edges.
Combine the sugar, cinnamon, nutmeg and salt; add to apple mixture and toss gently to coat. Spoon filling into pastry. Bake at 375° for 35 minutes.
In a small bowl, combine the topping ingredients. Sprinkle over filling. Bake 10-15 minutes longer or until crust is golden brown and apples are tender. Cool on a wire rack.