Originally Posted by Silversage
3 tablespoons white sugar
3 tablespoons dark brown sugar
3/4 cup flour
5 tablespoons melted butter
toss all of the above to combine, but leave it very lumpy.
Distribute over the top of the pie before baking
I don't melt the butter, I just cut the butter into the dry ingredients, kind of like making pie crust.
Blueberry pie generally has two crusts, though. the packages of frozen crusts generally come with two in the bag.
I've never used blueberry pie filling, so I can't weigh on on the texture. I just dump a bunch of blueberries in a bowl and mix them with a mixture of unflavored dry breadcrumbs and sugar before putting them into an unbaked crust. Dot the top with butter and put the top crust on. Be sure to cut slits or holes in the top crust to let the steam out.