1. In a bowl, combine spaghetti squash with broccoli florets, and red bell pepper.
2. Mix in sour cream, skim milk, curry powder, and Parmesan cheese, stirring well to coat.
3. Pour into a 9- by 13-inch casserole dish, and top with seasoned whole-wheat bread crumbs or prepared whole-grain stuffing (approximately 2 cups). Bake at 400 degrees for 30 minutes.