Oregon Blackberry Cobbler - Oregon Raspberries & Blackberries

Ingredients

• 4 cups fresh or frozen blackberries
• ¼ cup sugar
• 2 tablespoons cornstarch
• 1 tablespoon lemon juice
• 1 teaspoon vanilla extract
• 2 pie crusts (store bought or homemade)
• 1-2 tablespoons of melted butter
• 1 cup all purpose flour
• 1 cup granulated sugar
• 1 cup chopped walnuts
• 1 teaspoon ground cinnamon
• 1 teaspoon baking powder
• 1 teaspoon salt
• 1 cup unsalted butter, cold and cubed
• 1 cup milk
• 2 cups heavy whipping cream
• ¼ cup powdered sugar