Blackberry Coffee Cake with Streusel Topping | Paula Deen

Ingredients

• 1 cup plus 1/3 cup for the topping all purpose flour
• 1/2 cup plus 1/4 cup for the topping granulated sugar
• 2 tablespoons packed brown sugar
• 1/2 teaspoon ground cinnamon
• 1/2 cup cold and divided unsalted butter
• 1 teaspoon baking powder
• 1 teaspoon ground ginger
• 1/4 teaspoon salt
• 1 large egg
• 1 teaspoon vanilla
• 1/3 cup milk
• 1 1/2 cup frozen blackberries