Preheat oven to 350*F. Blend butter and sugar until combined. Add egg and applesauce (2-3 minutes). Mix in oats, flour, baking soda, baking powder, and salt. Then mix in raisins. Bake cookies for 13-15 minutes, until golden. Let cool completely. Whisk powdered sugar, syrup, and water until smooth. Drizzle over cooled cookies, and let sit.