Our ds will eat fiber-rich foods like raisins, dried fruits, whole wheat pasta, whole grain bread with butter, cereals like Quaker's Corn Bran, mini-wheats, oatmeal, sunflower seeds, and peas (and thick pea soup).
Can't think of any cabbage recipes, other than corned beef and cabbage (which we had this weekend, but ds wasn't interested).
Good luck!