Pineapple Pudding Cake

package (9 ounces) yellow cake mix

cold fat-free milk

package (1 ounce) sugar-free instant vanilla pudding mix

package (8 ounces) fat-free cream cheese

unsweetened crushed pineapple, well drained

carton (8 ounces) frozen fat-free whipped topping, thawed

chopped walnuts, toasted

maraschino cherries, well drained