Yes you can, I'm not too sure the added flavours would enhance the dish, but it's an addition to try. Try on a small amount and see it it's palatable. If in doubt, leave it out, it's not a dedicated addition. Apple sauce is fine as just apple sauce.
I have always used nutmeg in my apple pies, so yes, you can use it as a substitute
Apple pie spice is basically cinnamon and nutmeg, so if your recipe also calls for cinnamon, it may be fine, otherwise no.
Yes you can.
Gavin Ewart
make a different crumble on top
No, its just named "apple crumble" for nothing...=w=
2000kg
neither it is a apple crumble
Crumble topping
Use wholemeal flour for the crumble top and add raisins to the apples
Apple pie spice is basically a mixture of cinnamon and nutmeg
It depends how much you put in
des chips pomme-fraise (very strange food indeed)
Apple is a common fruit that is used to make crumble.