Combine cinnamon, walnuts, chips and white sugar; set aside. Blend eggs, sour cream, brown sugar and salad oil until creamy; add vanilla. Combine cracker crumbs, baking powder and soda; stir into batter. Pour half the batter into an oiled 13 x 23 cm baking pan. Sprinkle batter with half the cinnamon/sugar mix. Pour rest of batter in pan. Sprinkle top with remaining cinnamon/sugar mix. Bake at 180ºC or 45 minutes.