Combine apples slices, raisins, brown sugar and cinnamon together; spread into a lightly buttered 9” pie pan. Bake at 350 for 10 -15 min. Remove from oven and set aside. Whisk eggs, milk, flour and margarine together; pour over apple mixture. Bake at 450 until golden brown about 15 minutes. Sprinkle with powdered sugar.