Dutch Apple Pie

Dutch Apple Pie c/o Greg's Mimi:

take frozen pie crust (TJ's) out one hour before baking
preheat oven to 450
4 large tart apples
1 uncooked pie shell
1 cup (I use less) sugar
1 Tsp cinnamon
3/4 flour
1/3 cup butter (grated in a cheese grater-the BEST way to cut butter)
I also sometimes add oats and/nuts

slice apples into 16 pieces each
toss with 1/2 of the sugar and cinnamon,
pour into crust
mix flour , the remaining sugar and butter (oats and nuts if using)
pour over apples

bake at 450 for 10 minutes
lower heat to 350 and bake for 40 minutes