Blueberry Buttermilk Pie

Ingredients (9)

• 1 13-inch pie dough
• 1 1/2 cups granulated sugar
• 1/4 cup all-purpose flour
• 8 tbsp unsalted butter
• 3 large eggs
• 1 cup buttermilk
• 1/2 tsp vanilla extract
• 1 pint blueberries
• Confectioners sugar