Preheat oven to 425°F
In a large bowl add the apples, sugars, chai spice, cornstarch, and lemon juice. Toss to evenly coat.
To a food processor, add all the of ingredients for the crumble topping.
Pulse to combine, and the mixture forms pea sized granules.
Line a 9 inch pie pan with a pie crust.
Add the apple mixture to the unbaked pie crust.
Top the apple mixture with the crumble topping, taking care to cover all the way to the edge of the pie.
Crimp the edges of the pie.
Bake at 425°F for 45 minutes.
If the pie top or crust begins to darken too quickly, place a piece of aluminum foil across the top of the pie and continue to bake.
Cool until warm, and serve.