Blueberry Pie

Name: Blueberry Pie
Prep time: 45 min
Cook time: 1 h
Total time: 5 h 30 min
Yield: 8
Ingredients: Ingredients; 2 1/2 cups all-purpose flour; 1 teaspoon salt; 1 tablespoon granulated sugar; 1 cup cold unsalted butter, cubed; 6-8 tablespoons ice water; 6 cups fresh blueberries (or 5 cups if using frozen, thawed and drained); 3/4 cup granulated sugar; 1/3 cup cornstarch; 2 tablespoons lemon juice; 1 teaspoon lemon zest; 1/2 teaspoon vanilla extract; 1/4 teaspoon ground cinnamon; Pinch of salt; 2 tablespoons cold butter, cut into small pieces; 1 large egg, beaten (for egg wash); 1 tablespoon coarse sugar for sprinkling