dough for a 2-crust pie
1 quart blueberries, rinsed and drained
1 cup sugar
2 tablespoons flour
2 teaspoons tapioca
1/2 teaspoon cinnamon
1/2 teaspoon lemon juice
dash salt
1 tablespoon butter
Roll out pastry and fit bottom crust into pie plate. Mix next seven ingredients, fill crust, dot with butter, and cover with top crust. Press edges of crust together and cut slits in top. Bake 10 minutes at 450 degrees F, then 45 minutes at 350 degrees F.