Apple pie making...how to add the crumble crust on top of the mound of raw apples?
According to the crumb recipe on the Epicurious Website, the crumb mixture should be the texture of wet sand and then packed down on the mound of filling:


  1 cup all purpose flour
  
  1/2 cup sugar
  
  1/4 cup (packed) golden brown sugar
  
  1 1/2 teaspoons ground cinnamon
  
  1/2 teaspoon salt
  
  6 tablespoons chilled unsalted butter, cut into 1/2-inch cubes
  
  Blend first 5 ingredients in processor. Add chilled butter cubes;
  using on/off turns, cut in until mixture resembles wet sand.
  
  (After mounding the filling in the crust, pack topping over and around apples. Bake pie on baking
  sheet in pre-heated 400-degree oven, until topping is golden, about 40 minutes (cover top with foil
  if browning too quickly). Reduce oven temperature to 350°F. Bake until
  apples in center are tender when pierced and filling is bubbling
  thickly at edges, about 45 minutes longer. Cool until warm, about 1
  hour. Serve with ice cream.