blackberry pie

I was able to get a couple of containers of fresh blackberries from Costco so I made some refrigerator jam and this lovely pie.  The crust was from a pre-made refrigerated pie crust.  The filling was 6 c. of berries, 3/4 c. sugar, 3 Tbs. cornstarch, 2 Tbs. lemon juice, and a pinch of salt.  I just cut out stars from the second crust for the top and affixed them with an egg wash.  I froze the unbaked pie for an hour, more egg wash and sprinkled with sugar, then baked for 1 hour 20 minutes at 375 degrees.  It is best to bake this on a parchment lined baking sheet to catch any potential spills, and tent the pie with foil after about an hour in the oven if it looks like it will get too brown.