Blackberry Ruffled Milk Pie

Bahan-bahan (8 porsi)

• 18 sheets frozen phyllo dough, thawed
• 6 tablespoons butter, melted
• 3 cups fresh blackberries, halved if large
• 2 tablespoons all-purpose flour
• 1 1/2 cups whole milk
• 3 large eggs
• 1 tablespoon vanilla extract
• 1/2 cup packed brown sugar
• cinnamon and powdered sugar, for dusting