This shows the best way to pre bake. I’ve used both methods. The lower temperature and longer bake works better in my opinion. But I use rice as the pie weight instead of sugar. And I down bake quite as brown since I bake my FILLED pie at 400° with the rack on the lowest position.
http://www.seriouseats.com/2016/10/how-to-blind-bake-a-pie-crust.html
This shows show to pre bake and add the top. But I’d pre bake the way Stella Parks does it. Then attach the top
crust as shown here.
https://www.google.com/amp/s/food52...st-pies-join-the-anti-soggy-crust-crusade/amp
Other pie tips:
For thickener tapioca starch is hands down the best (not tapioca pearls or instant tapioca). For an apple pie use 1/4 cup (1 oz) tapioca starch. If you bake by weight, use 2% to the weight of the apples.
For fruit that is really juicy like blueberries, use 1/3 cup (1 1/2 oz) tapioca starch. If you bake by weight use 5.5% tapioca to the weight of the berries.
For a beautiful finish, brush top crust with an egg wash. Egg wash is just 1 egg beaten with 1 tablespoon of water, milk or cream.
Apple pie is notorious for developing a big gap between the crust and filling. Use a good firm apples like Granny Smith, Braeburn, or Pink Lady. Avoid Delicious apples.
To slightly pre cook the apples or not is a debate with no end among bakers. I’ll pre-cook gently from time to time. If you pre-cook be sure not to cook the apples too long, not more than five minutes.
Another method that I’ve read about but have not tried is to pour boiling water over the sliced apples cover and let sit for 10 minutes. Drain very well. Then add your sugar spices and thickener. I’ve not tried it so I don’t know how it works.