Set cinnamon roll icing aside. Separate dough into individual rolls, roll out each into a 4 inch circle. Arrange on a greased 12 inch pizza pan. overlapping edges. Bake 400 for 8 minutes. Spoon Apple pie filling over rolls to within 1/2 inch of edge. Combine brown sugar and butter, sprinkle over filling. Bake 6 to 8 minutes. longer or until crust is golden brown. cool. drizzle with icing.