Place sausage and water in large nonstick frying pan; cover tightly and cook over medium heat 8 minutes, stirring occasionally. Meanwhile, cut onion into 12 wedges; core and cut each apple into 8 wedges. Remove sausage to warm platter. Pour off drippings. Cook and stir onion and apples in same frying pan coated with nonstick cooking spray 4 minutes or until apples are just tender. Remove to sausage platter. Spray pan again and add potatoes, cook, covered, over medium-high heat for 5 minutes or until potatoes are tender and golden brown, stirring occasionally. Combine vinegar, sugar and caraway seed. Reduce heat; return sausage, apple mixture and vinegar mixture to frying pan and cook 1 minute, or until heated through, stirring gently. Sprinkle with parsley.