Preheat your oven to 375°F (190°C).
Line a pie dish with the bottom pie crust and set aside.
In a large mixing bowl, combine the fresh blueberries, granulated sugar, cornstarch, Primo's Traditional Balsamic Vinegar, lemon juice, lemon zest, ground cinnamon, and a pinch of salt. Toss until the blueberries are evenly coated.
Pour the blueberry mixture into the prepared pie crust, spreading it out evenly.
Dot the top of the blueberry mixture with the small pieces of unsalted butter.
Cover the pie with the top pie crust, crimping the edges to seal. Cut a few slits in the top crust to allow steam to escape during baking.
Optionally, brush the top crust with a little milk or egg wash for a golden finish.
Place the pie on a baking sheet to catch any drips, and bake in the preheated oven for 45-50 minutes, or until the crust is golden brown and the filling is bubbling.
If the crust starts to brown too quickly, you can cover the edges with aluminum foil to prevent burning.
Once baked, remove the pie from the oven and allow it to cool for at least 1 hour before slicing and serving.
Serve your delicious Balsamic Blueberry Pie warm or at room temperature, optionally topped with a scoop of vanilla ice cream or a dollop of whipped cream.