Sour Cream Apple Pie

For a 9 inch crust.

2 T flour
1/8 t salt
1/2 c sugar
1 egg
1 c sour cream
1 t vanilla
1/2 t nutmeg
1 c chopped apples

Topping:
1/4 c sugar
1/4 c brown sugar
1 t cinnamon
1/4 c butter
1/3 c flour

Bake at 400 F for 15 minutes. Add topping and bake for 10 more minutes; or bake at 325 for 30-40 minutes.