Preheat oven to 350°. Spray a 13x9-inch baking dish with cooking spray.
In a large bowl, stir together ¼ cup sugar and cornstarch. Add peaches, tossing gently to coat. Spoon mixture into prepared pan.
In same bowl, whisk together flour, baking powder, salt, and remaining ½ cup sugar. Using a pastry blender, cut in butter until mixture is crumbly. Stir in blueberries. Gradually add cream, stirring just until dry ingredients are moistened. Drop dough by tablespoonfuls over peaches.
Bake for 45 to 55 minutes or until biscuits are golden brown. Let cool for at least 30 minutes before serving.
Notes
To make this cobbler year-round, use 3 (20-ounce) bags of thawed frozen peaches and 1 (16-ounce) bag of frozen blueberries that have been thawed and drained in place of fresh fruit.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/peach-cobbler-blueberry-biscuits-recipe/