Press cookie dough into a greased 9-inch pie plate. Place on a baking sheet; set aside.
In large skillet, heat butter over medium heat. Add apples, prunes, brown sugar and cinnamon. Sauté until apples are softened (about 3-5 minutes). Transfer to pie.
In large bowl, combine remaining ingredients; whisk until well mixed. Pour over apples in pie. Bake in a preheated 375°F oven 45-50 minutes or until knife inserted in center comes out clean.