Preheat the oven to 350°F.
Prepare the filling. In a large bowl, combine all the ingredients for the filling. Pour into a 9-inch skillet.
Prepare the biscuits. In a medium bowl, combine flour, sugar, baking powder, and salt. Stir in sour cream and melted butter.
Spoon biscuit mixture over the fruit mixture. Sprinkle biscuits with turbinado sugar.
Bake for 50 minutes or until golden brown. Serve warm.