Can I freeze a blueberry pie? And, if so, should it be frozen before or after baking?
Yes, you can freeze blueberry pies. And although you can freeze them after they have been baked, it's better to freeze them before they have been cooked.
The problem with freezing after baking is that the dough becomes tougher and loses its flakiness. If you do freeze a baked pie, wrap it tightly and place the entire wrapped pie in a sealable plastic bag. Before sealing, try to remove all the air.
When ready to use, thaw the pie for about three hours, then place it in a 450-degree oven for 15 to 20 minutes to crisp it back up.
If you're storing an unbaked pie, do not cut vent holes in the upper crust before freezing. Do this just before you bake it. Again, wrap the pie extremely well and place the whole pie in a large, sealable plastic bag. Remove excess air, and seal.
When you are ready to bake your pies, unwrap but do not thaw them. Bake at 400 degrees for the first 20 minutes, then turn the oven down to 350 degrees for the remaining time.