This simple recipe from my grandmother's cookbook is highly adaptable and great in a pre-made crust.

Pile a pastry-lined pie pan high with thinly sliced apples. Sprinkle generously with a sugar and flour mixture to taste (1 cup sugar to 1 TBS. flour).

Dot with plenty of butter, cover with a top crust or lattice pastry strips and bake in a hot 425 degree oven about 45 minutes or until apples are tender. If desired, omit the top crust, and cover pie with marshmallows after apples are tender and brown in a slow oven.