Preheat oven to 425◦. Grease a 10-inch pie plate with non-stick cooking spray. Place pie crust in bottom of pie plate and crimp edges.
Mix sugar, brown sugar, flour, and cinnamon in a large bowl.
Peel and core apples and cut into very thin slices. Add to bowl with sugar mixture and gently stir. Place in prepared pie crust.
For topping, mix flour, brown sugar, and cinnamon. Cut in butter with pastry blender or fork until mixture resembles coarse meal. Spread over apple mixture in pie crust - the pan will be very full.