Wash, peel, core and cut apples in even size pieces. You can slice or dice them, the shape doesn’t matter, keeping them similar size does, so that they cook at the same speed.
Put apples in a large bowl. Add all of the remaining ingredients and give it all a good stir. Make sure that all of the apples are well coated with all of the ingredients.
Put apple mixture into your prepared frozen pie crust.
Sprinkle the crumb topping on top of the apples.
Place on a cookie sheet in the oven (to catch any delicious liquid that might escape while it bakes). Bake for 15 minutes at 375 then turn the heat down to 350 and continue baking for an additional 35-45 minutes or until a knife pierces easily through the apples. Watch to be sure it doesn’t brown too much. If the crust starts getting dark, cover it loosely with aluminum foil while it finishes baking.